Spoke to PDL this morning.
Looks like they are working on a plan for their iconic range. But not quite there yet. They are no longer doing Nero. You can currently purchase a bluetooth dimmer module, which will be wifi enabled in the future. With a Zigbee hub.
So might need to find a different solution, or go for some hpm switches. Haven't been completely sold on the iconic range - like the look, but find the flimsy feel of the faceplate and switch a bit off putting.