Ed Dillinger senior and junior are scheming. See some of what they’re up to in this video clip.http://www.youtube.com/watch?v=BgZs4reDohk
If there’s ever a Tron 3 (ie. if Tron Legacy sells more DVDs and Blu-rays than is frankly realistic) then its plot roots could likely be traced back through this easter egg, from the upcoming Legacy disc. But I fear that’s all hypothetical.