T.R. Knight leaving "Grey's Anatomy"

It's true: T.R. Knight leaving "Grey's Anatomy"

According to Michael Ausiello, the actor has been granted his wish to leave the show three years early in the wake of George O'Malley's lighter storylines. As Ausiello reports, "ABC has granted T.R. Knight's wish to be released from his contract. The official decision, I'm told, came down in the past few days, just as many of his castmates began receiving their formal pickup letters from the network." PLUS: "Grey's" promotes Jessica Capshaw to series regular.