Greys Anatomy - Jessica Capshaw talks about Meredith, George and Izzie

Jessica Capshaw -- who stars as Dr. Arizona Robbins in the hit ABC series -- doesn't know if Ellen Pompeo pregnancy will be written into next season's show, and she's equally unaware if T.R. Knight and Katherine Heigl will return (The two appeared to have died in the season finale).

"No one knows!" Capshaw, the daughter of Kate Capshaw and stepdaughter of Steven Spielberg says.

She adds: "[Show creator Shonda Rhimes] is keeping it under wraps, and I think the best thing about that is she is the guardian of the gate. It's better that way. She doesn't even run the risk of it coming out because nobody knows."

Source: US Magazine