Hopefully it will be backwards compatible with all the games I've bought on PSN for PS3 and the PS2 classics ....... I won't be happy if it isn't because if it is........... it will truly be the "station for play" backed by "4" generations of consoles and games
SONY already stated that it wont have bc.
Well I watched the whole conference and dont rember them ever saying anything about a confrontation on no backwards compatibility plus theres no where on the internet that says for sure that it won't be backwards compatible look at this website
Any of the games you bought on both physical or digital media wont work on the PS4, there is the possibility that you could buy PS3 games digital for the PS4 at some point but the ones you bought or buy on the current gen, only work on this gen.