As wishful as its sounds, I have some reason to believe that it'll be a fresh constraction line, or something similar. An anon who I heard of via Eurobricks spoke of an older brother who was working on a new constraction line for TLG with a strong sci-fi focus, allegedly "very different from Bionicle". The anon didn't see any visuals, though.
Agreed. Keep your expectations low in case it's some sort of kiddy app.