We refuse to post specifics in public, because many times what we plan to do, never makes it to the final product. Then we have to deal with, "But they said they were going to do it! What happened?". And the reason can be 1 of many.
If you really want to know what we're currently up to, I can give you that. Due to the changes made in XP12's engine model, Saso continues to work on "libturbine". He's also adding a few "extras". And me, I'm juggling 650, TBM and DC3 update work. The TBM is getting some polish on the 3D, textures and animations.