Sony Computer Entertainment confirmed that the games you have for PlayStation 3 won’t work with PlayStation 4. The good news is Sony plans on using Gaikai, a cloud computing company they acquired, to potentially solve the problem.
PlayStation 4 owners will be able to stream PS3 games to their console using Gaikai. Additionally, Sony also mentioned that PSOne and PlayStation 2 games would be made available for streaming as well.
The PlayStation 4 is scheduled for release this holiday. Sony have not yet announced a release date or price for the console.