Colorado-based WMD have become one of the more established and well known makers of Eurorack modular synth gear, and their latest release, shown at Knobcon 2017, is the Arpitecht. In their words, it's a "voltage-controlled quanitzer and rhythmic arpeggio generator." The cool part, though, is that via its ability to handle many different kinds of scales and modes, it enables modular musicians who might not have a traditional musical background to sound like they do.
Melodies and arpeggios spanning up to eight octaves are possible. An adjunct module, Triad (just to the left of the Arpitecht in this rack), adds polyphonic chord capabilities.
Alex from WMD gives us the lowdown in this video. The Arpitecht will be available from dealers at an MSRP of US $299.