MATRIXSYNTH

Sonic LAB: Korg DS-10 Music In Your Pocket

see the write-up on Sonic State. video by William H of inside synthesis. On Ebay.

an improvisation with the smoking E machines

YouTube via vonhaulshoven. via the forum.
Update: "[vonhaulshoven] will play these stuf live at the Dutch E live festival at 11 october"

DSI Mopho

"* Features 100% analog signal path
* Two oscillators
* One classic Curtis low-pass filter (switchable 2- or 4-pole)
* Analog VCAs
* Three envelope generators (ADSR plus delay)
* Two sub-octave generators (one octave down and two octaves down)
* External audio input with feedback
* Four assignable performance controls per program
* Gated 16 x 4 step sequencer (one sequence per program)

* Arpeggiator
* Fully programmable (includes software editor for Mac OS and Windows)
* 384 programs
* I/O: MIDI In, MIDI Out/Thru, Audio In, Left and Right Audio Out, Headphone
Out
* 7.5” L x 5” W x 1.4” H (19.05 cm x 12.7 cm x 3.56 cm)
* 1.5 lb. (0.7 kg) •
Pricing
$439 US"

Note this one has been making the rounds and I'm not sure how much if any of this is confirmed.
There is no mention on the DSI site as of this post.

Update: image of the prototype via sequencer.de via lyndon in the comments:

CASIO HT6000 Synthesizer

YouTube via gary909.

Anyone know how editable these are if at all? Preset only or more?

Roland Juno 6 synthesizer

YouTube via gary909

Roland JX-3P Synthesizer

YouTube via gary909

ARP AXXE synthesizer

YouTube via gary909

Roland JD-800 + SCI Prophet-600 + Yamaha DX7 II

YouTube via retrosound72

"vintage synth demo by RetroSound

bassline: SCI Prophet-600 sequenced by the MFB Step64 step sequencer and transposed by the DX7;
pad sounds: Roland JD-800;
digital chord sounds: Yamaha DX7 II FD;
drums: Roland TR-707;

no overdubbing, no sequencer software used"