I know the the PS3 can (when its connected to a 3DTV) but will the PS4? And will we need a 3DTV to play 3D games on the PS4,or will we need 3D glasses?
Yes, the PS4 will probably play 3D games/movies. But in order to play a 3D game, you need to have a 3D TV AND glasses. The only way right now that you can play 3D on a non-3D TV is if you have those red/blue glasses, so you will need a 3D TV and 3D glasses.