The 5th episode of Season 3 has a new synopsis up on Zap2it. As always, head on downb below for it to avoid any spoilers.
Episode Title: Magic Duel
Air Date: December 1st 2012
Synopsis: When Trixie returns to Ponyville, she defeats Twilight and banishes her from town.
This is of course, unconfirmed until we see it on The Hub. Zap2it hasn't been wrong so far though on synopsis.