So, shifting back to announcements, obviously we don't know WHEN the next announcement will be (so there's probably no reason to speculate on that). But, if the past 2 years (obviously not including last year) are an indicator, the first 4 house announcements went IP, Original, IP, Original. The year before (27), the 5 IPs were announced one by one, then all 4 originals were announced just weeks before the event started.
I think they're more likely to go with the blueprint of the last 2 years. So I would guess the next announcement is an original. But Puppet Theater is a bit weird because they kind of accidentally announced it, but I don't think they "officially" announced it (I could be wrong). So maybe they do that officially next. Though, I have a sneaky suspicion they may make an Icon announcement - something revolving around Jack being back along with past Icons - and announce the Icons Captured house at the same time. They kind of just did a dual announcement with Dates + Beetlejuice house...I can see them doing it again with Jack Icon + Icons Captured house. That's my best guess as to the next house announcement.