After watching the first episode, I can only assume that the show is in fact titled "Expedition Unknown: Hunt For The Yeti", but it isn't all being displayed in the guide. So I think we can put the blame on both History AND Tribune this time.
I don't know how many yeti episodes there are going to be, nor whether new non-yeti episodes resume immediately thereafter or if this is just an off-season thing.
Didn't I already see Josh Gates hunt for the Yeti on Destination Truth ? Just kidding, thanks for the update. Another show to keep an eye on is FX and American Horror Story. FX Now has it listed as American Horror Story: Roanoke but DISH has it listed as American Horror Story: 6