Having checked out the previews, etc... Really liking:
-Wavetone synth engine
-comb filters
-ability to save kits
-page loop, for remixing patterns

-pattern transpose, with ability to filter OUT tracks (so they don't transpose)
-prepare mutes, nice little performance tool

-master compressor, something the first Digitone is lacking, with sidechain!
-extra LFO, always useful
-the NOT A:B trig conditions, greatly expands the A:B trig conditions
-full note edit page
One downer, Loopop video says sound presets aren't sorted by machine, it's just one long list.... Seems like they could maybe add a filter to remedy that.
Manual for all the details.