Sony released a PS2 slim 2 years b4 they released PS3. And now they released a PS3 slim in 2009 so will there b a PS4 by 2011?

It is a PlayStation 4, the theological next system from Sony.

yes there might have a new system but it might be the xbox720 because the ps3 is having a lot of problems and the xbox360 is selling good and so is the wii but for now the xbox 360 is the king. way better than the ps3 or wii.if u want the ps3 it has a lot of problems on the system and the wii is mostly kids game.