I've had a chance to play with this unit, which is an Korg MS-10 Emulator.
you can create some great beefy sound and effects especially with the stylus.
Although you are limited to 2 Synth sounds and 4 Drum sounds you can still create some neat tunes.
I might convert an Amiga Tune one of these days.
Its greatest limiting factor is the Sequencer. If you think of Tracking, methodology.
The Ds-10 is limited to 16 Patterns. and a length of 96. or 96 Slots where these patterns can be allocated in.
I can see it being a great tool as part of a studio, or live performance where you can trigger patterns along with other equipment.
If they had included a Tracker style sequencer I would have given it a 10/10 but It only gets a 7/10 for me.
Official Log for Non-Japanese release:
http://www.ds10blog.jp/?p=35
Also if you search on YouTube there are many clips.