The Ausiello Files gave us some spoilers for a
Smallville episode due to air early in 2010. Almost the entire episode will be held at Comic Con, which will actually be called Metropolis Wonder Con. According to Ausiello, "Clark will run into his greatest foes yet: heavily costumed nerds that don't use deodorant."
Chole will also get a love interest and Zatanna will also return.