Via Starwars.com:
DARTH VADER: ONE-MAN FLEET – STAR WARS REBELS: THE SIEGE OF LOTHAL PREVIEW
Get a first look at the new episode of Star Wars Rebels “The Siege of Lothal”, premiering tonight at 9P/8C on Disney XD.
Darth Vader: One-Man Fleet – Star Wars Rebels: The Siege of Lothal Preview on Disney Video