I looks like it's just a natural progression of the old Clone Wars cartoons that they had on CN after Attack of the Clones came out. The stylization seems to borrow from the anyway. But as much as I loved the Clone Wars shorts, this doesn't really look all that great. The CG looks poorly done to the point that they might as well have just stuck with the cel animation of the Clone Wars, that fit the stylization better anyway.
All of that said, It looks alright, maybe worth pirating or something long after the fact like I did with Clone Wars since it took them forever to show them up here. Does that one Sith woman look like Asajj Ventress to anyone. She seemed to use two light sabers and not a double sided one like the character in this does, but it does resemble her. Also, I thought that Anakin killed her near the end of the Clone Wars.
Edit: Looking up Asajj to see how to spell her name I discovered that she doesn't die when Anakin knocks her off that cliff and that her curved sabers can actually be connected into an S-shaped double sided one. So that may be her in the trailer after all Also she isn't actually a Sith because Dooku never trains her as one. She just has Dark force powers due to her constant anger. Wow, there's lore nerds on the interwebs that know everything.