When Sony announced the Playstation 4 on Wednesday, it also brought the news that the next-gen console will not be backward compatible with the current-gen Playstation 3. Sony Worldwide Studios president Shuhei Yoshida put the final nail in the coffin today by confirming that this includes all PSN games and content.
Since the PS3 is powered by the exotic Cell architecture while the PS4 uses the more traditional x86 architecture, games from the older console will not work on the new. Yoshida told Engadget that it hopes to bring hopes to make some PS3 title playable on the PS4 "in some form"but it would only be games that would not chew up resources on the new console during emulation.
There is some hope for backwards compatibility on the PS4 though through the acquisition of Gaikai and its cloud streaming service though. Gaikai president Dave Perry did promise back catalog games will be available for PS4 users through the cloud at some point. However, details on if players will have access to games they've already purchased without having to pay an additional fee is unknown.