Gossip Girl: Will Michelle Trachtenberg Join the Cast?

One of the most buzzed-about parts of Monday’s Gossip Girl season finale was Georgina Sparks’ surprise appearance at the end – and the self-proclaimed bitch’s declaration that she will be attending NYU in the fall … and rooming with Blair Waldorf!

But with Michelle Trachtenberg, who plays Georgina, starring on a new series, Mercy, next fall, is she really joining the Gossip Girl cast, as this season-ending scene implied?