This one in via Soviet Space Child.
It looks a like a Teenage Engineering Pocket Operator and iPhone morphed together. Release is scheduled for Fall of next year.
The initial details:

sound design in your pocket
A ground-breaking pocket-sized digital synthesizer designed for infinite customization and versatility.
Beautifully engineered for the modern producer
— Interchangeable sound cartridges
— Unibody front-plate design
— Durable and soft-to-touch materials
— LED-backlit buttons
— Universal input interface for both rhythm/sequencer and melody composition
ZONT modules change the game!
ZONT digital sound engines come in cartridge form, just like your favorite game, with four engines in your hands right out the box ready to feed the appetites of the modern producer.
Collaborate
Our sound engineers team up with prestigious electronic music producers and DJs to design custom sound engines for limited edition cartridges.
Connect
With RCA, MIDI, USB-C and 3.5mm jack outputs, the Studio Dock turns ZONT into a full member of your studio setup. Integrated Wi-Fi for cloud-based collaboration and production.