Seems its true.
My guess is it will only be a major problem if it would allow a player to increase perception beyond the perception cap. Otherwise it makes stealth IO's even more attractive for stalkers.
My MA IDs:
Fiend Space: 211464
The perc+ IO is only 20% percep buff. Which means stalkers are safe.
20% Perception is identical to the "Empowerment Station" +Perception buff.
So the Perc IOs currently add 100 Feet +Perception, and Stealth IOs currently add 300 feet of +Stealth.
I might as well post a complete breakdown of how this affects Perception-versus-Stealth in zones here... 
*** Stealth Caps are as follows: ***
@25: 968 (Stalker) 484.0 (Non Stalker) - Bloody Bay
@30: 1003 (Stalker) 501.5 (Non Stalker) - Siren's Call
@38: 1059 (Stalker) 529.5 (Non Stalker) - Warburg
@50: 1143 (Stalker) 571.5 (Non Stalker) - Recluse's Victory
The Perception cap is always Stalker Stealth Cap +10 feet.
*** Stalker Stealth Powers: ***
Stalker Hide + Stealth is -889 Feet.
Stalker Hide + Invis is -1111 Feet.
Stalker Hide + Stealth + Stealth IO is -1189 Feet.
*** Non-Stalker Stealth Powers ***
Most "Stealth" Powers are -389 Feet.
Stealth Power + Stealth IO is -689 Feet.
Invisibility is -611 Feet.
Superior Invisibility is -1000 Feet.
A Stalker with Hide + Stealth + Stealth IO is always at the Stalker Stealth cap, regardless of level.
A Non-Stalker with a Stealth Power + Stealth IO is always at the Non-Stalker Stealth Cap, regardless of level.
ONE PERCEPTION BUFF WILL ALWAYS LET ANY TOON SEE A NON-STALKER.
---------------------------------------
*** Perception values: ***
+ Normal inherent "Perception" range is 500 Feet.
+ Powerset Self-Perception Buffs except Tactics all give +300 feet.
+ Clear Mind/Clarity buffs vary by level (Controller @ 25 is 307.5 Feet), two applications always hits the cap.
+ Empowerment Station Buff grants 100 Feet
+ New Perception IO grants 100 Feet
Tactics Value buffs in feet:
+ 172.2 (Blaster/Tanker/Scrapper/Stalker/Brute, Bloody Bay)
+ 186.2 (Blaster/Tanker/Scrapper/Stalker/Brute, Siren's Call)
+ 208.6 (Blaster/Tanker/Scrapper/Stalker/Brute, Warburg)
+ 242.2 (Blaster/Tanker/Scrapper/Stalker/Brute, Recluse's Victory)
+ 307.5 (Defender, Bloody Bay)
+ 332.5 (Defender, Siren's Call)
+ 372.5 (Defender, Warburg)
+ 432.5 (Defender, Recluse's Victory)
+ 246.0 (Controller/Corruptor, Bloody Bay)
+ 266.0 (Controller/Corruptor, Siren's Call)
+ 298.0 (Controller/Corruptor, Warburg)
+ 346.0 (Controller/Corruptor, Recluse's Victory)
+ 184.5 (Dominator/Mastermind, Bloody Bay)
+ 199.5 (Dominator/Mastermind, Siren's Call)
+ 223.5 (Dominator/Mastermind, Warburg)
+ 259.5 (Dominator/Mastermind, Recluse's Victory)
+ 221.4 (Kheldian, Bloody Bay)
+ 239.4 (Kheldian, Siren's Call)
+ 268.2 (Kheldian, Warburg)
+ 311.4 (Kheldian, Recluse's Victory)
---------------------------------------
*** So, who can hit the Perception Cap solo? (AKA "Who can see a maxxed-Stealth Stalker?") ***
+++ Bloody Bay: (Level 25, Cap of 978 feet)
Tankers/Scrappers/Blasters - Yes, Need Empowerment buff OR Perception IO.
500 (Normal Base Perception)
172.2 (Tanker/Scrapper/Blaster/Stalker/Brute Tactics @25)
300 (Powerset self +Perception like Focussed Senses/Targetting Drone)
= 972.2 Feet, 4.2 Feet over the Stealth Cap. Not quite enough to see a Stalker within melee range.
A Perception IO or Empowerment buff will cover the last 5.8 feet.
Defenders - Yes, Need Empowerment buff AND Perception IO.
500 (Normal Base Perception)
307.5 (Defender Tactics @25)
= 807.5 Feet
A Perception IO combined with an Empowerment buff will cover the last 170.5 feet.
Controllers - No.
500 (Normal Base Perception)
246.0 (Controller/Corruptor Tactics @25)
= 746.0 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 232 feet.
Warshades - Yes, need no extras.
500 (Normal Base Perception)
221.4 (Kheldian Tactics @25)
300 (Powerset self +Perception - Shadow Cloak)
= 1021.4 Feet
Peacebringers - No.
500 (Normal Base Perception)
221.4 (Kheldian Tactics @25)
= 721.4 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 256.6 feet.
+++ Siren's Call: (Level 30, Cap of 1013 feet)
Tankers/Scrappers/Blasters - Yes, Need Empowerment buff OR Perception IO.
500 (Normal Base Perception)
186.2 (Tanker/Scrapper/Blaster/Stalker/Brute Tactics @30)
300 (Powerset self +Perception like Focussed Senses/Targetting Drone)
= 986.2 Feet.
A Perception IO or Empowerment buff will cover the last 26.8 feet.
Defenders - Yes, Need Empowerment buff AND Perception IO.
500 (Normal Base Perception)
332.5 (Defender Tactics @30)
= 832.5 Feet
A Perception IO combined with an Empowerment buff will cover the last 180.5 feet.
Controllers - No.
500 (Normal Base Perception)
266.0 (Controller/Corruptor Tactics @30)
= 766.0 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 247 feet.
Warshades - Yes, need no extras.
500 (Normal Base Perception)
239.4 (Kheldian Tactics @30)
300 (Powerset self +Perception - Shadow Cloak)
= 1039.4 Feet
Peacebringers - No.
500 (Normal Base Perception)
239.4 (Kheldian Tactics @30)
= 739.4 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 273.6 feet.
+++ Warburg: (Level 38, Cap of 1069 feet)[/color]
Tankers/Scrappers/Blasters/Stalkers/Brutes - Yes, Need Empowerment buff OR Perception IO.
500 (Normal Base Perception)
208.6 (Tanker/Scrapper/Blaster/Stalker/Brute Tactics @38)
300 (Powerset self +Perception like Focussed Senses/Targetting Drone)
= 1008.6 Feet.
A Perception IO or Empowerment buff will cover the last 60.4 feet.
Defenders - Yes, Need Empowerment buff AND Perception IO.
500 (Normal Base Perception)
372.5 (Defender Tactics @38)
= 872.5 Feet
A Perception IO combined with an Empowerment buff will cover the last 196.5 feet.
Controllers/Corruptors - No.
500 (Normal Base Perception)
298.0 (Controller/Corruptor Tactics @38)
= 798.0 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 271 feet.
Dominators/Masterminds - No.
500 (Normal Base Perception)
223.5 (Dominator/Mastermind Tactics @38)
= 723.5 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 345.5 feet.
Warshades - Yes. (It's 0.8 feet short without buffs)
500 (Normal Base Perception)
268.2 (Kheldian Tactics @38)
300 (Powerset self +Perception - Shadow Cloak)
= 1086.2 Feet, 0.8 Feet short of the cap.
Peacebringers - No.
500 (Normal Base Perception)
268.2 (Kheldian Tactics @38)
= 768.2 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 300.8 feet.
+++ Recluse's Victory: (Level 50, Cap of 1153 feet)
Tankers/Scrappers/Blasters - Yes, Need Empowerment buff AND Perception IO, or Focussed Accuracy.
500 (Normal Base Perception)
242.2 (Tanker/Scrapper/Blaster/Stalker/Brute Tactics @50)
300 (Powerset self +Perception like Focussed Senses/Targetting Drone)
= 1042.2 Feet.
A Perception IO combined with an Empowerment buff will cover the last 110.8 feet.
FOCUSSED ACCURACY from the Tanker/Scrapper Epic Pools also adds another 300 Feet.
Defenders - No.
500 (Normal Base Perception)
432.5 (Defender Tactics @50)
= 932.5 Feet
A Perception IO combined with an Empowerment buff will NOT the last 220.5 feet.
Controllers - No.
500 (Normal Base Perception)
346.0 (Controller/Corruptor Tactics @50)
= 846.0 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 307 feet.
Warshades - Yes, Need Empowerment buff OR Perception IO.
500 (Normal Base Perception)
311.4 (Kheldian Tactics @50)
300 (Powerset self +Perception - Shadow Cloak)
= 1111.4 Feet
A Perception IO or Empowerment buff will cover the last 41.6 feet.
Peacebringers - No.
500 (Normal Base Perception)
311.4 (Kheldian Tactics @50)
= 811.4 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 341.6 feet.
Main source for all these numbers is the US board thread here.
[ QUOTE ]
20% Perception is identical to the "Empowerment Station" +Perception buff.
So the Perc IOs currently add 100 Feet +Perception, and Stealth IOs currently add 300 feet of +Stealth.
I might as well post a complete breakdown of how this affects Perception-versus-Stealth in zones here...
*** Stealth Caps are as follows: ***
@25: 968 (Stalker) 484.0 (Non Stalker) - Bloody Bay
@30: 1003 (Stalker) 501.5 (Non Stalker) - Siren's Call
@38: 1059 (Stalker) 529.5 (Non Stalker) - Warburg
@50: 1143 (Stalker) 571.5 (Non Stalker) - Recluse's Victory
The Perception cap is always Stalker Stealth Cap +10 feet.
*** Stalker Stealth Powers: ***
Stalker Hide + Stealth is -889 Feet.
Stalker Hide + Invis is -1111 Feet.
Stalker Hide + Stealth + Stealth IO is -1189 Feet.
*** Non-Stalker Stealth Powers ***
Most "Stealth" Powers are -389 Feet.
Stealth Power + Stealth IO is -689 Feet.
Invisibility is -611 Feet.
Superior Invisibility is -1000 Feet.
A Stalker with Hide + Stealth + Stealth IO is always at the Stalker Stealth cap, regardless of level.
A Non-Stalker with a Stealth Power + Stealth IO is always at the Non-Stalker Stealth Cap, regardless of level.
ONE PERCEPTION BUFF WILL ALWAYS LET ANY TOON SEE A NON-STALKER.
---------------------------------------
*** Perception values: ***
+ Normal inherent "Perception" range is 500 Feet.
+ Powerset Self-Perception Buffs except Tactics all give +300 feet.
+ Clear Mind/Clarity buffs vary by level (Controller @ 25 is 307.5 Feet), two applications always hits the cap.
+ Empowerment Station Buff grants 100 Feet
+ New Perception IO grants 100 Feet
Tactics Value buffs in feet:
+ 172.2 (Blaster/Tanker/Scrapper/Stalker/Brute, Bloody Bay)
+ 186.2 (Blaster/Tanker/Scrapper/Stalker/Brute, Siren's Call)
+ 208.6 (Blaster/Tanker/Scrapper/Stalker/Brute, Warburg)
+ 242.2 (Blaster/Tanker/Scrapper/Stalker/Brute, Recluse's Victory)
+ 307.5 (Defender, Bloody Bay)
+ 332.5 (Defender, Siren's Call)
+ 372.5 (Defender, Warburg)
+ 432.5 (Defender, Recluse's Victory)
+ 246.0 (Controller/Corruptor, Bloody Bay)
+ 266.0 (Controller/Corruptor, Siren's Call)
+ 298.0 (Controller/Corruptor, Warburg)
+ 346.0 (Controller/Corruptor, Recluse's Victory)
+ 184.5 (Dominator/Mastermind, Bloody Bay)
+ 199.5 (Dominator/Mastermind, Siren's Call)
+ 223.5 (Dominator/Mastermind, Warburg)
+ 259.5 (Dominator/Mastermind, Recluse's Victory)
+ 221.4 (Kheldian, Bloody Bay)
+ 239.4 (Kheldian, Siren's Call)
+ 268.2 (Kheldian, Warburg)
+ 311.4 (Kheldian, Recluse's Victory)
---------------------------------------
*** So, who can hit the Perception Cap solo? (AKA "Who can see a maxxed-Stealth Stalker?") ***
+++ Bloody Bay: (Level 25, Cap of 978 feet)
Tankers/Scrappers/Blasters - Yes, Need Empowerment buff OR Perception IO.
500 (Normal Base Perception)
172.2 (Tanker/Scrapper/Blaster/Stalker/Brute Tactics @25)
300 (Powerset self +Perception like Focussed Senses/Targetting Drone)
= 972.2 Feet, 4.2 Feet over the Stealth Cap. Not quite enough to see a Stalker within melee range.
A Perception IO or Empowerment buff will cover the last 5.8 feet.
Defenders - Yes, Need Empowerment buff AND Perception IO.
500 (Normal Base Perception)
307.5 (Defender Tactics @25)
= 807.5 Feet
A Perception IO combined with an Empowerment buff will cover the last 170.5 feet.
Controllers - No.
500 (Normal Base Perception)
246.0 (Controller/Corruptor Tactics @25)
= 746.0 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 232 feet.
Warshades - Yes, need no extras.
500 (Normal Base Perception)
221.4 (Kheldian Tactics @25)
300 (Powerset self +Perception - Shadow Cloak)
= 1021.4 Feet
Peacebringers - No.
500 (Normal Base Perception)
221.4 (Kheldian Tactics @25)
= 721.4 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 256.6 feet.
+++ Siren's Call: (Level 30, Cap of 1013 feet)
Tankers/Scrappers/Blasters - Yes, Need Empowerment buff OR Perception IO.
500 (Normal Base Perception)
186.2 (Tanker/Scrapper/Blaster/Stalker/Brute Tactics @30)
300 (Powerset self +Perception like Focussed Senses/Targetting Drone)
= 986.2 Feet.
A Perception IO or Empowerment buff will cover the last 26.8 feet.
Defenders - Yes, Need Empowerment buff AND Perception IO.
500 (Normal Base Perception)
332.5 (Defender Tactics @30)
= 832.5 Feet
A Perception IO combined with an Empowerment buff will cover the last 180.5 feet.
Controllers - No.
500 (Normal Base Perception)
266.0 (Controller/Corruptor Tactics @30)
= 766.0 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 247 feet.
Warshades - Yes, need no extras.
500 (Normal Base Perception)
239.4 (Kheldian Tactics @30)
300 (Powerset self +Perception - Shadow Cloak)
= 1039.4 Feet
Peacebringers - No.
500 (Normal Base Perception)
239.4 (Kheldian Tactics @30)
= 739.4 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 273.6 feet.
+++ Warburg: (Level 38, Cap of 1069 feet)[/color]
Tankers/Scrappers/Blasters/Stalkers/Brutes - Yes, Need Empowerment buff OR Perception IO.
500 (Normal Base Perception)
208.6 (Tanker/Scrapper/Blaster/Stalker/Brute Tactics @38)
300 (Powerset self +Perception like Focussed Senses/Targetting Drone)
= 1008.6 Feet.
A Perception IO or Empowerment buff will cover the last 60.4 feet.
Defenders - Yes, Need Empowerment buff AND Perception IO.
500 (Normal Base Perception)
372.5 (Defender Tactics @38)
= 872.5 Feet
A Perception IO combined with an Empowerment buff will cover the last 196.5 feet.
Controllers/Corruptors - No.
500 (Normal Base Perception)
298.0 (Controller/Corruptor Tactics @38)
= 798.0 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 271 feet.
Dominators/Masterminds - No.
500 (Normal Base Perception)
223.5 (Dominator/Mastermind Tactics @38)
= 723.5 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 345.5 feet.
Warshades - Yes. (It's 0.8 feet short without buffs)
500 (Normal Base Perception)
268.2 (Kheldian Tactics @38)
300 (Powerset self +Perception - Shadow Cloak)
= 1086.2 Feet, 0.8 Feet short of the cap.
Peacebringers - No.
500 (Normal Base Perception)
268.2 (Kheldian Tactics @38)
= 768.2 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 300.8 feet.
+++ Recluse's Victory: (Level 50, Cap of 1153 feet)
Tankers/Scrappers/Blasters - Yes, Need Empowerment buff AND Perception IO, or Focussed Accuracy.
500 (Normal Base Perception)
242.2 (Tanker/Scrapper/Blaster/Stalker/Brute Tactics @50)
300 (Powerset self +Perception like Focussed Senses/Targetting Drone)
= 1042.2 Feet.
A Perception IO combined with an Empowerment buff will cover the last 110.8 feet.
FOCUSSED ACCURACY from the Tanker/Scrapper Epic Pools also adds another 300 Feet.
Defenders - No.
500 (Normal Base Perception)
432.5 (Defender Tactics @50)
= 932.5 Feet
A Perception IO combined with an Empowerment buff will NOT the last 220.5 feet.
Controllers - No.
500 (Normal Base Perception)
346.0 (Controller/Corruptor Tactics @50)
= 846.0 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 307 feet.
Warshades - Yes, Need Empowerment buff OR Perception IO.
500 (Normal Base Perception)
311.4 (Kheldian Tactics @50)
300 (Powerset self +Perception - Shadow Cloak)
= 1111.4 Feet
A Perception IO or Empowerment buff will cover the last 41.6 feet.
Peacebringers - No.
500 (Normal Base Perception)
311.4 (Kheldian Tactics @50)
= 811.4 Feet
A Perception IO combined with an Empowerment buff will NOT cover the last 341.6 feet.
Main source for all these numbers is the US board thread here.
[/ QUOTE ]
Very nice, thanks for that Mael, now i know im safe 
although i am kinda burned out atm i might misunderstand this but what makes you think you are safe? According to this blaster with tactics and perception IO can see maxed out stalkers no?
The point is that only sets with self +perception will be able to do it solo (and defenders with Tactics, IO and empowerment buff pre RV).
CoX 50s: <ill/rad> <ice/ice> <fire/kin> <grav/sonic> <ice/storm> <earth/kin> <kin/elec> <cold/psy> <thugs/dark> <fire/dark> <dark/elec> <night widow> <EM/ninj> <mind/icy>
Stealth + Stealth IO + Hide - 1189 Feet.
+ Normal inherent "Perception" range is 500 Feet.
+ 242.2 (Blaster/Tanker/Scrapper/Stalker/Brute, Recluse's Victory)
+ Perc IO add 100 Feet of perception
500+100+242.2 = 842.2, no?
also 300 (Powerset self +Perception like Focussed Senses/Targetting Drone). Only devices could see a stalker. And even if he is at cap he can see him only at 10 feet which is not a big problem.
+++ Warburg: (Level 38, Cap of 1069 feet)
Tankers/Scrappers/Blasters/Stalkers/Brutes - Yes, Need Empowerment buff OR Perception IO.
500 (Normal Base Perception)
208.6 (Tanker/Scrapper/Blaster/Stalker/Brute Tactics @38)
300 (Powerset self +Perception like Focussed Senses/Targetting Drone)
= 1008.6 Feet.
A Perception IO or Empowerment buff will cover the last 60.4 feet.
Personaly i'm not impressed with perception IO sets, Think it's about time they add to the stalker rather than taking things away.
Of course thats my own opinion and will conflict with many other people.
One of the leaders of the Harlequins villain group and currently on defiant.
[ QUOTE ]
The point is that only sets with self +perception will be able to do it solo (and defenders with Tactics, IO and empowerment buff pre RV).
[/ QUOTE ]
agreed but what happens withing teams.Clear mind with tactics IO and empowerment buff lets say.The way i see it is that blasters within teams can see stalkers that try approach to land an AS.
First +stealth IOs, now +perc IOs - seems balanced to me.
@Jay Leon Hart
Kerensky: this has nothing to do with underwear
Zwillinger: I put on my robe and wizard hat...
Synapse: I had to resist starting my last post off with "Yo dawg!"
[ QUOTE ]
Clear mind with tactics IO and empowerment buff lets say.
[/ QUOTE ]
Given that Clear mind stacks with itself and two applications will always hit the +Perc cap, in that instance you wouldn't even need Tactics let alone a +Pereption IO or an Empowerment buff.
Well in that case i am seriously confused and i hope is not the hangover.Is it possible for my fender to see solo stalker with perc IO slotted in tactics?
Without any other buffs, and assuming the Stalker is at the Stealth cap? No.
You'd be anywhere from 70 to 120 feet short depending on your level.
An empowerment station +Perception buff would let you add 100 feet onto that (so you'd be fine anywhere but RV) or a single "Clear mind" would add well over 300 feet and stick you at the perception cap anywhere.
Small Update - From here
"Fixed a stacking issue with the Rectified Reticle Increased Perception IO. It now functions as a Set Bonus rather than a proc"
Basically this means that if you get one that's lower than level 33 and slot it into something like Aim/Build up, it'll ALWAYS be active at level 30 and above... you don't actually have to pop the power every 120 secs.
[ QUOTE ]
If this is true, doesnt this mean that, yet again, stalkers get a kick in the teeth from the Devs?
[/ QUOTE ]
Well, proper stalkers already play around the fact that the enemy is at +percep cap. This however allows for a lot of people to have higher perception by themselves..not just SR scrappers and devices blasters etc. Which may be hard on the not-so-proper stalkers.. Maybe it creates for more options overall, I dont know.
ps. Ok the bonus is lower than I thought, less to worry then..
thank you i have been looking for an answer to this for a long time.
Nice necropost.
How big is the debuff on Arctic Air (its the only one I can think of atm). Would this be sufficient to allow seeing a maxed out stalker on ATs that otherwise cannot?
Mind of Gaia lvl 50 Defiant's first Mind/Storm 'troller.
Deadly Doc 50 Dark/Dark Corr
and lots more on Pinnacle,Union and Defiant
Arctic Air inflicts an autohit Slow (which knocks everything except Hide and Invisibility off) and Debuffs Stealth by 389 feet (which starts eating into Hide/Invisibility's numbers).
The only way a Stalker could remain hidden in it is to run Both Hide and Invisibility: This would grant -1111 Feet of "Stealth" that won't get suppressed by the slow. 1111 Feet - 389 Feet (from AA's -stealth effect) - 500 Feet (normal base perception) leaves 222 Feet still to cover before the stalker becomes visible. Assuming you're a controller, Tactics grants 222 Feet of +perception from well before Bloody Bay.
And remember that when a Stalker is running Invisibility, they're unable to attack. When they switch from Invis to Stealth in order to attack, Arctic Air will suppress Stealth and cut right through Hide on its own.
I have only just heard about that they are going to be bringing out +per IOs out with i11.
Can anyone from test confirm this? If so, can I be the first to say DOOOOM!?
If this is true, doesnt this mean that, yet again, stalkers get a kick in the teeth from the Devs?
So, confirmation anyone?