Yesterday, we reported the exciting news that the fourth season of Arrested Development might be thirteen episodes instead of its originally-announced ten-episode order.  The upcoming season will premiere on Netflix, and today an unnamed spokesperson for the company tells The Huffington Post that the Bluths will return in spring 2013.  That seems like a reasonable window since filming is already underway.  However, the spokesperson also provided another exciting tidbit: the new season will be at least ten episodes, which lends further credence to David Cross' comment that he thinks season four will have thirteen episodes.Hit the jump for more.I don't think anyone is going to argue against more Arrested Development.  Keep in mind that the new season is all a prologue to the upcoming film.  Creator Mitch Hurwitz is trying to catch up with all of the characters so that when the movie comes out, he doesn't have to spend half of it trying to explain what's been going on with the Bluth family.  If Hurwitz needs more time to tell his prologue, then it’s a benefit for the film since he can take more time to tell an individual, feature-length story rather than having to add more to the bridge between season three and the movie.As we previously reported, each episode is supposed to focus on an individual character, but Cross says "There’s too much story. Some characters will have two-parters."  Here's hoping there a two-part Franklin episode.