They are not going to do anything to Blaster AoEs and I wouldn't worry about it all. They are working on balancing other ATs up to par with blasters and toughening up villans. Blasters are the stick by which the ATs are being measured, but they are not going to break the stick.
Scrappers have been brought up to par, some controllers are just as powerful(or more so) with pets, and tankers are being worked on as we speak.
Is Blaster AoE going to be "fixed?" Nope. It ain't broke and they ain't gonna "fix" it.