I think this was added in one of the recent updated because I had never run into it before. Correct me if I'm wrong. But the choices I've seen where:
Room of crowns vs. Room of heat
(in my instance the crowns seems more appealing -- 450 worth vs unknown amount of heat, maybe equivalent but I usually need money over heat)
Room of green treasures Vs. Room of heart boxes
(didn't need the health so I went for loot)
And you have to step on one of two party buttons to pick a room, doing so will block off the other.
I hadn't seen anyone mentioning this in the forum, maybe I missed it, but I thought this was a nice little tweak to the level. Nice to have a little variety like this added to levels.
So was this indeed new or had I just somehow missed out on this feature for a few weeks?
They've had it for a while. Though from what I've seen so far they are a bit rare.