We've had a couple on the backburner, so we should get on them soon :D. You can actually see their concepts on the Discord (are probably buried at this point but just ask).
SubStar members get a monthly progress update that often gives looks at stuff much further out, like progress on content as it's being sculpted or concept animations. The higher tiers get access to the Discord where we do pretty much daily updates and post stuff that doesn't make it to the monthly update.