Eh, just because there's arms doesn't necessarily mean it's an HF hybrid. Could be some interpretation of the Toa being assembled. The viewport looks like an empty canister, so maybe they're being built and placed into the canisters.
What is for sure is that, whatever form of Bionicle this is, it's definitely darker and grittier than what we're used to. The whole aesthetic seems very grunge, almost Alien/Matrix like.
As always, interested in further developments.