So season four is about to start next month...on April 16th. They've been showing the rest of season three as "specials" attached before the airing of "Bates Motel". Dave Hester is officially gone from the show, and as we've discussed Hester is suing the show for wrongful termination. Apparently as of this month A&E partially won part of their law suit against Hester.
They've also added additional "buyers" to the cast. My favourite of the newbies is Ivy Calvin.