Tyros 2 is due for replacement next year, but probably not until the autumn (fall) so the pre-release versions probably won’t be shown before Frankfurt.
Ketron has promised the final release of the Audya. (This sounds exciting)
Roland released new organs in September, so there is a good chance of a new arranger being shown at NAMM.
The rest we will have to wait and see. (Most other manufactures have already released new models)

Bill