That's CN MO - they sometimes don't officially cancel shows, they just leave them hanging and never order any more episodes. Normally I wouldn't worry, but this comment by Filoni during their recent USO gig made me pause:
Quote:
Q: Is Season Five going to be the last season of The Clone Wars?
Filoni: A heavy hitting question, right out of the box. Is Season five going to be the last season of The Clone Wars. To be honest, we’ve just kept making episodes, and I plan to keep making episodes until they tell me to stop. Because of our production system, we have several episodes in production beyond season five. Beyond that, I really can’t say and that’s not unusual for a television show. Even season to season you’re never quite sure. You never know.
Clone Wars has always done OK in the ratings, not great, and the move to Saturday morning did cause a drop. It's not a stretch that it might just be canceled.