Rumor: StarCraft 2 this year...
As much as I hate speculating on rumors and such, this one is just getting really really big. I'm linking articles from the Blizzard fansite I used to work on, so they are pretty trust worthy and know their stuff, but also the "big name" blogs are also posting about this (namely Kotaku).
http://sc.gosugamers.net/news/6151/100 (StarCraft 2 to be announced May 19)
http://sc.gosugamers.net/news.php?id=6168 (Confirmed, new Blizzard product at World Wide Invitational)
With all of these pointing to it coming out (and sooner rather than later) I really don't see why Blizzard WOULDN'T do this. I know so many people (myself included) who would quit WoW to play this game. We've been waiting almost ten years for this (2008 will be the ten year anniversery of StarCraft, convinient eh?) and there is no better place to announce it than in South Korea.
Oh man I hope this is true, because if it isn't and ends up being Diablo III or World of StarCraft (ugh!) I would be very very sad.
Make the right move Blizzard!

Comments
Jimmy..
Holy shit. Starcraft. It's like the one RTS that I really, really love. I've played SC and SC:BW over and over just for the freaking storyline. And if they add a new race? Do you think it'd be the Protoss/Zerg hybrid we discovered at the end of the BW campaign? COULD IT BE?
Gosh. GOSH. I'm excited. Like, really. If and when it does come out, you know I'm buying it. And you KNOW we will play. I suck at it, but WHO CARES. YAY.
also i'm a big fat nerd, but meh.