The CW has released the first promotional poster for season four of 90210, and two familiar faces are missing.

As previously reported, Trevor Donovan will NOT be returning as a series regular in the fall, although he is likely to appear on a few episodes. He's the only cast member to have been publicly demoted so far, but Gillian Zinser is nowhere to be found here, either. What might that mean for Ivy's future on the show?

90210 moves to Tuesdays in September. What new characters can we expect to populate Beverly Hills during that time? Navid's evil uncle, for starers.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.