I feel like it will definitely be a 4pack, but plussed up with expanding packaging that becomes a stage, like the Emperor's Throne Room from last year. And it will be a $100 Pulse exclusive.
I'd love to see a Cantina in the spirit of the Boba Fett Throne Room, though.
(And for the record, Jayson is strongly implying the next playset will be an Endor Bunker.)