Castle has been a late spring or late summer release for the last two years. It is too soon for us to be seeing any preliminary sets. By the Toyfair in mid-February we'll know what's coming out. I would not be surprised if they retool the theme a bit much like KK1 versus KK2. So it may not be a straight line continuation of the theme, but it will still be Castle. It's also possible that it will be a limited year for Castle, since Prince of Persia is coming out.
"He is a very shallow critic who cannot see an eternal rebel in the heart of a conservative." - G.K. Chesterton