Of course the big questions for long term fans is whether Phil LaMarr will be back to voice the lead as well as who will replace the late Mako as the mighty Aku.
Expect those answers sometime next year.
(Personally I'm just giddy to see Aku back in action. He was long one of my favorite villains in animation. Hopefully we will get a worthy follow up to Mako's voice in the new show.)