Annnnd... here he is. Condor Joe is revealed in the Tatsunoko vs. Capcom game in all his roaring glory. Read all about it on ign.com here. Better yet, see him in action on the video here.
If they didn't get Isao Sasaki (the original voice actor) to do his voice, they found somebody darned close. All his mannerisms are there, ramped up for 2009.
As a Joe fan, I think I'm in love again...
UPDATE: Isao Sasaki's name is reported to be in the game credits! Awesome!