Sony is today revealing new details on its PlayStation 3 to PlayStation 4 digital upgrade program, which lets gamers move up to a next-gen copy of select PS3 games for only $10. Call of Duty: Ghosts, Battlefield 4, Assassin's Creed IV: Black Flag, and Watch Dogs will all be part of the offer, and the discount applies to both physical and digital versions of their lesser PS3 counterparts. Packaged copies of each game will include a code that can be redeemed on PlayStation Network for a PS4 digital download of the same title. Just remember not to throw away the original disc when your PlayStation 4 arrives; you'll need the original PS3 Blu-ray to activate each PS4 download.

Things are much easier for users that buy digitally, as the PlayStation Store will keep track of purchases and automatically price participating next-gen titles at $10. Keep in mind that this is a limited time promotion. Codes and downloads must be redeemed by January 31st for Assassins Creed IV and Watch Dogs. Battlefield 4's cutoff is March 28th and the deal runs until March 31st for Call of Duty: Ghosts. But doing business directly with Sony may be easier than similar upgrade programs being offered by retailers.