The Kemper Kone driver appears from a distance to be a fairly standard Celestion with a whizzer cone. The dust cap is a larger one glued into the whizzer rather than right at the end of the coil like other makers do it (i.e. Eminence with the 12LTA). The industry's whizzer "full range" 12" speakers are somewhat similar in response, with a high end dropoff from 9-12kHz and some interesting resonances in the upper midrange\low treble. And the dispersion characteristics of whizzer speakers IME can be extremely beamy in the trebles.
It looks like Kemper might have combined some aspects of the driver design with DSP, which could be special IRs tweaked to make the result as flat as possible without using a tweeter.
The driver in one NAMM video appears to have an interesting surround, more like a woofer. If memory serves, the surround is much like the one on the F12-X200; I wonder if the Kemper Kone is basically a F12-X200, but with a whizzer cone instead of a tweeter? But one thing is for certain; the Kemper Kone is NOT a stock green F12-X200 as some have speculated (as the Kone does not have an integrated tweeter and crossover).
I would guess also that the Kemper Kone driver would be quite usable as a limited treble semi-FRFR without the Kemper DSP, if Celestion did not engineer in some strange driver EQ stuff to help Kemper with dispersion or DSP tricks. The driver would probably have the dispersion issues you get with whizzer cone speakers however, which apparently the Kemper DSP helps to tame.
Now I'm really interested to try out the Kemper Kone EQ with my dust gathering Eminence 12LTAs.