Take a look and make your own conclusions. They seem to be emphasizing starcraft on their website. Startcraft 2 or World of Starcraft seems to be pretty guaranteed =P.
Actually, they are going through the timeline. day1.jpg has warcraft 1 and 2, day2.jpg has diablo, day3.jpg has starcraft. They're planing on unveiling something big, no doubt, but it doesn't necessarily have anything to do with SC.