Arrested Development fans may want to keep an eye on the Beverly Hills, 90210 spinoff in the works at CW. Jessica Walter, who played the nutty, booze-soaked Lucille Bluth on the Emmy-winning Fox comedy, will play Tabitha, the grandmother, in the highly-anticipated drama from executive producer Rob Thomas. The spinoff is expected to revolve around the Mills family of Beverly Hills whose matriarch, Tabitha, is a 60-something has-been actress and alcoholic. Tabitha’s adult son, Harry, moves back to Beverly Hills to care for his mother. Joining him are his wife Celia (Lori Laughlin, Summerland), an Olympic athlete-turned-personal trainer, and their two 16-year-old children, Annie (Degrassi: The Next Generation‘s Shenae Grimes) and Dixon (who has yet to be cast).