I voted.
I believe that a release date will definately be a part of Blizzard's E3 showcase. They've been soo silent this last year, they must have something planned.
I also believe, there is a small chance they will annouce Starcraft 2. Its high time they return back to the PC SC universe. Unless they consider Ghost the return and Diablo 3 as another game.
I got some information from a shady character that either SC2 OR D3 will be annouced. Some game, some time.
And also, sadly, Blizzard will probably hold off SCG for the next generation of consoles. While this is VERY sad and angersome, it might give me enough time to scrap some money together to buy an Xbox 360.