It just makes sense!

Disney acquired Marvel last year…
Disney acquired Playdom (which creates social networking games) this year.
Facebook (and games on Facebook) is widely popular right now.

Disney + Marvel + Playdom/Facebook = HUGE WIN!

Nicole Tanner over at IGN broke the news earlier this week and it sounds like they’re in the very early development stages right now.  Not many details have been leaked yet (like what Marvel characters we’ll see) and Disney CEO Bob Iger stated during this week’s earnings call that there “would be a game based on ‘Marvel IP’ “.