It looks like a pair of new Korg Volca devices could be coming at the 2019 NAMM Show.
The Volca Modular appears to be a normalized modular synth design – playable without patching, but with routing that can be customized using breadboard-style patch cables.
There also appears to be support for gate manipulation, sequencing, microtonal tuning, randomization, Buchla-inspired dual-LPG’s, wavefolding and a special ‘Space Out’ option.
Korg Volca Drum
Note: Korg has not officially announced either a Volca Modular or Volca Drum at this time.