It does bear resemblance to the Mask of Ultimate Power (not that we've seen much of it..). I think it's pretty clear we'll see Makuta as a set this year. We need a big villain to battle, and LOSS isn't exactly.. intimidating. I think Makuta (almost wanted to say Teridax..) will be awake near the end of the year/first wave.
I think the other brother should have been called Mata Nui or Arthaka just for fan service's sake. It just seems to random for 7 key characters to return but to exclude the biggest of them all.
And are the villagers called Matoran? Cause apparently masks are still Kanohi and Toa are still Toa.