The event officially has 8 houses. We have seen construction on 6 of them: SS15, tent behind it, tent behind Mummy, Parisian Courtyard, and 2 tents in "H lot" (what Murdy called Curious George). Notably we have not seen any evidence of a house in Waterworld queue. So where's the other 2? Former Walking Dead building is an obvious candidate, and I think Murdy even confirmed. #8 is the mystery. If there's only one house allowed per soundstage, then the SS 24 rumor is looking very likely