Internals are likely all the same
Fader size and form factor look the same as the current M32 Live. Cosmetics are updated - possibly saving costs.
Buttons are now fully illuminated, rather than the illuminated legend on black buttons - a positive view in my opinion. The old button style was never clear enough to my tired old eyes and, interestingly enough, a lot of old Midas press used buttons like this.
The default card is now the DN32 Live (probably what drove the "Live" suffix), so multitrack recording to SD card out of the box, while still allowing USB to DAW. That's a big gain if there's no price hike.
Doesn't appear to be anything else different. Software all looks the same.