That's a fair question, Jon, as people should be able to plan.
People are welcome to make suggestions for themes; several have already been made in various threads and at some point (soonish) we'll pull them together. I think the idea is that we'll set up a slate for the following four months from April through July and then another four months would take us to the end of the calendar year. We'd like to stay flexible especially this first year, as we see what works and what is less successful; we'd also like to remain open to input from new members.
All of that said, a request and a notice: We'd like to continue with themes for this year, so please avoid genre nominations; we'd like to avoid repeating categories from either club for this year, also. And, there's going to be wee bit bit of benevolent despotism involved in setting the slates at least at first; input is highly important but we'd like a balanced slate as well, so there's going to be an element of judgment involved in determining the calendar.
As always, people are welcome and highly desired to post in the Welcome thread (or elsewhere) with suggestions and requests. Let's make this the club everyone would like.