the fans of AD mourn:
http://the-op.com/phpBB2/viewtopic.php?t=3095
http://the-op.com/phpBB2/viewtopic.php?t=3096
"Arrested Development," the critically praised but low-rated Fox show that won an Emmy for outstanding comedy series, as well as Emmys for writing, will not be resurrected on Showtime as rumors circulating for months have suggested.
A source close to the negotiations said that creator Mitch Hurwitz had decided after a lengthy period of debating an offer from Showtime that "Arrested Development reached its end, creatively, as a series."
I take the last part to mean you might see it again as a movie or limited run.
He also hinted that while "Arrested" may have run its course as a TV show as far as he's concerned, he would be interested in reviving the franchise as a feature film. [Variety]