The latest issue of Star Wars Insider has revealed that the episode that was suppose to serve as the season premiere of season 5 has in fact been changed. Star Wars Insider revealed in their previous issue that the premiere episode would be titled A War On Two Fronts. But now the episode that will be the season premiere for season 5 is titled Revival, which is a newly revealed episode title, and will focus on Darth Maul. Here is the quote from Star Wars Insider #135
Last issue, we revealed several episode titles for the upcoming season of Star Wars: The Clone Wars, naming the season premiere as “A War on Two Fronts.” As a wise Jedi once said, “Always in motion is the future.” As the season premiere approaches, episode order will occasionally change. In fact we can now confirm that the Season Five debut will instead be “Revival,” an episode that continues the Darth Maul storyline begun in Season Four.
No word yet on how long this new Darth Maul arc will be, but I like the idea of this season picking up right where season 4 left off.