Unless single day ticket sales are REALLY slow and they feel like they need a boost sooner, I'd expect an announcement after the holiday that is a reminder of Beetlejuice plus then a big gun IP like Hill House, TCM, or Halloween III (if that's the plan) along with the release of multiday tickets. Maybe a semi / mini announcement for hardcore fans like "an all new lagoon show" or "all new Jack stage show" or something via social media to keep the drumbeat going, but not a full blown announcement with press release / blog post for a bit.