Theres actually two Shadow Shard TFs that you can do at 40, Portal smasher & Destroyer of Strength. More info on all of 'em can be found at the botom of this page.
If you can get on by midday i'm trying to organise the second SSTF, details are here.
It seems this forum is getting too popular (i'm shocked and appalled!) as that post has been been bumped onto the second page (and another new post has appeared while i was finding the links for this one!), so if you can reply in that thread if you can make it that'd be helpful.
@orht - long and tedious poster
Does neone wanna do the lowest lvl one (i cant remember what it is but im sure someone will :P), on Saturday Afternoon at about 15:00 BST its the TF that is 40+
Is not going to remain VIP after Jan 14th 2012, but may remain an active Premium account holder.
See some of you guys/gals in other/new MMOs Soon(tm)
N.B. If you are going to do smt, please do it or GTFO and STFU nab