I'm going to go ahead an avoid high expectations on this one. GT is a talented guy, but a lot of the times he falls back on his usual style of overly-long pauses, no music, and stiff motions. Those are all fine, and key elements of his style of work, but it gets old when not spaced apart properly. Samurai Jack was NOT immune to this. Plus Mako is dead! I'm sure the new voice of Aku will be fine, but Mako's voice was pretty unique. Nothing against Greg Baldwin, but his Iroh is noticeably different.
Plus, IMHO, Star Wars: Clone Wars sucked. Admittedly that's more because it was just an absolute mess when it came to how Star Wars should be, but the fact that Tartakovsky didn't pick up on that leads me to believe he's a bit stuck in his ways. It's probably fine for Samurai Jack, since it's an original GT creation, but I just don't want to see more GT formula, because I've seen it soooo much by now it holds no interest for me anymore. He needs to evolve the show somehow if I'm going to get fully on board with this.
Naysaying aside, I am glad this is happening either way. Samurai Jack needs a proper conclusion!