According to a translation from GAF, Japanese website AV Watch are reporting Firmware 3.20 for PS3, which includes the option for 3D gaming, will go live on June 10th.
The report also mentions there will be re-releases of games that will support 3D. So far, LittleBigPlanet, Killzone 2, Super Stardust HD and more are known to support 3D.
We’ll just have to wait and see if anymore news is released as we get closer to June.
UF Blog: Rumour – 3D Firmware for PS3 coming on June 10th – http://ow.ly/1gvsW