Darth Maui died, period. As far as I am concerned, anyways. I absolutely despise this "Clone Wars" TV show, and refuse to watch it, ever. Not only is it animated, which frankly takes away from most of the awesomeness that was Star Wars, for me, but George Lucas is just trying to shove as much crap into it as he can to make it sell better, in my opinion.
Of course, Maul was one of the only things I liked about TPM, but that was mostly because he was so quiet and had a very mysterious, but powerful presence. Having him come back in a cartoon kind of ruins that for me.