In a very depressing bit of news for my fellow Arrested Development fans, series creator Mitch Hurwitz has decided not to return to run the series, despite Showtime's offer to pick the show up. This move very likely means that the chances of the series continuing are over.
http://filmforce.ign.com/articles/698/698881p1.html
It's a shame, but it looks like this may be the final nail in the coffin for Arrested Development. Still a chance for a movie, or that the show will continue on with Mitch as a consultant, but it's doubtful.
RIP to the best show ever.