Even if we do get Wario tonight, which is somewhat believable, you guys do realize that in no way confirms anything (other than Wario being in the game and anything else Sakurai tells us I suppose)? Wario being revealed tonight is plausible and easy to guess; you just pick a veteran reveal for the most likely day to have one and draw out of a hat between the three most likely choices by far: Wario, Meta Knight, and Ice Climbers.
As I think about it though, Wario, Meta Knight, and Ice Climbers are the three most logical characters to save for last since they have the three most fundamentally broken gameplay dynamics in Brawl. Wario is a nearly pure run-away character, a gameplay style they very clearly want to nerf into the ground. Meta Knight has no real weaknesses and many real strengths; he's a character in need of a bit of a beating with the nerf bat, and that's something to be handled delicately. Ice Climbers have a gimmicky playstyle revolving primarily around infinites, and systematically, making them play well is probably harder than making any other character play well. I think any of them tonight is logical though hardly guaranteed (waiting until next week or even stuffing all the characters into an August direct would make sense too), and I really look forward to hearing about changes on all of them.