A French Sony employee has leaked some details regarding what Sony has in store at E3 this year. Following are rumors about the NGP, Metal Gear, Wipeout NGP, a possible interest from Bungie, and plenty more.
The user on the forums known as O_O_O seems to be legitimate and has definitely provided leaked details previously. After much digging, I found their previous leaks on E3 2009 from 21/05/09. You can find a link inside the story.