Oh shit, I hate to kill any Gameboners but here's a thread on GAF about the site that said that HL2 Ep. 3 would be at E3. Apparently the site is full of shit.
http://www.neogaf.com/forum/showpost...66&postcount=1
This is the OP of the thread showing an e-mail that the guy had with some guy from Valve(?), it basically disproves it.