Well, I'm cautiously-optimistic. ^^
Edit: *does some research*
Ah. So, the story starts after the destruction of Thundera, where a bunch of the population survived and have managed to carve out a kingdom for themselves on Third Earth. 26 episodes are confirmed, and they can finish the story by 52 if need be, but they hope to exceed the original Thundercats' 135 episodes. Snarf is apparently going to be treated more like R2-D2 or Chewbacca, where he speaks in words that the audience can't understand, but that the other characters can. Mumm-Ra starts out trapped in stone at the beginning of the series, and will presumably break out at some point.
Oh, and if this does well, we might be getting a Silverhawks cartoon.