Great. But I am a bit pessimistic. The announced Vega 12 GPU is the chip inside the Radeon Pro Vega 16 and 20 indeed, available in the new high-end MacBook Pro 15". It has a Vega architecture from start to end (GCN 5.0).
The Radeon RX Vega M in the Hades Canyon is
marketed as being a "Vega" GPU, but it is not. It is recognized internally as a Polaris 22 as you know. But it is not a pure Polaris chip neither. It is somewhat a hybrid with a Polaris architecture (GCN 4.0) and a Vega memory controller (to keep things simple).
Still, it is a very good GPU* but
Polaris 22 ≠
Vega 12
So I think it won't work alas. But I'd be pleased to be wrong (especially as I'd like to buy this NUC for macOS!)
Keep up the good work and let us know.
* I notice that the
low-end Polaris 22 GPU (Radeon RX Vega M
GL) has the same number of shading and texture mapping units as the
high-end Vega 12 GPU (Radeon Pro Vega
20).