Yesterday, a video was released announcing that Sarah Michelle Gellar would in fact be voicing the Seventh Sister, one of the two new Inquisitors from the upcoming season of Star Wars Rebels.
There goes the speculation that she would be voicing Leia, Mara Jade, or any of the other half dozen theories that were floating around. Still no word on who will be voicing Fifth Brother, the other of the two Inquisitors coming up in the show.
Season 2 of Star Wars Rebels will premiere on Wednesday, October 14th 2015 on Disney XD. In the meantime, you can get caught up on Season 1 of Star Wars Rebels, which is out on Blu-ray and DVD now.