I agree with John. That seems to be the most likely release date. It'll be so cool, looking at how much top-of-the-line RTS gaming has changed in terms of graphics and how much it will stay the same in gameplay. To be honest though, I'm afraid of change, and I don't think I will want to play SCII right off the bat; I'd have to spend sometime warming up to the idea and a lot of time playing the campaign, getting used to the 3D view. No more supply depot barracks blocks on LT I bet ): That's one thing that completely revolutionizes the gameplay on that map.
Plus, I'd have to upgrade my system :P