If such a device should to be released, it's better to do justice to the "original name": the Neuron (see top / Elektron Users forum).
On second thoughts, I don't think this device will be announced at Summer NAMM 2017. All individual track outs on the A4mk2 and ARmk2 could be a sign the "Neuron" is indeed coming, but at least those new mk2 devices should work in order to route them to the Neuron. My guess is the ARmk2 release depends on the Digitakt's OS to be further developed, which will probably be rolled-out the coming months (1.04, 1.05, 1.06, etc.).
If yet another new device will be announced, it must be based on current tech stack readily available to deploy pretty fast. A Digitakt form factor "Analog 1 / 2" for example.