The big thing we've been talking about is how we are going to release things once the main book is ready. Grey had a pretty cool idea - zine style releases periodically, while I suggested things could be collected (based on demand) into bigger books later on. The zine thing is particularly nice as it's something Grey and I could probably keep up with as our two man team.
As for a preview - I am sorry about that. We'll have something around release (so people know what they are getting into) but at the moment we figured we'd put our energy into getting this full game out for all of you.
Anyway, thanks for reading!