I returned yesterday and was on almost all day. I didn't see any Hopi chatting in global and I joined up with MrDDT's tribe and nobody there has heard from any Hopi lately either
I do believe that Alex checks in once in a while though... and I think the Hopi tribe area might still be there.
Fatboy would likely know, as he's active and located nearby the old Hopi lands as far as I know.