If you have a 3D TV you could play it now, the last system update 3.30 made your PS3 able to play 3D games.

The big PS3 system update that will enable 3D Bluray playback from your console has been rumored to be a June 10th release.

Sony is releasing the prices for it's 3D TV's on 18th May.

They are doing a deal when you buy Sony a 3D TV, you get 4 free 3D games to download, so logically the 3D games themselves will be available when the TV's go on sale.