According to Nintendo Power, Hideo Kojima is working on the stage for Snake in the next Smash Bros. I think many people missed it because it's in an utterly pointless and boring argument between two Nintendo Power Staff members about who'll be better in Super Smash Bros Brawl (Snake or Pit), but something was said off-hand that's actually new. This wasn't even announced in the podcast by HideoBlog so I don't know where they got the info. It seems likely though and NP probably has some reliable sources seeing as they're much higher on the foodchain than any other news source for Nintendo!

Chris H: "[I]f you want to talk about something big, how about the news Hideo Kojima, Snake's creator, is designing Snake's level in Brawl? Snake's inclusion means we're not only getting one of the best characters in gaming, but one of the best developers as well."

Very interesting! Hideo Kojima working on a level in Brawl? Maybe he'll work on some other stuff too? He is, after all, one of the most respected designers in the game industry. He's right up there with Miyamoto!