I talked to a Steinberg guy at the Tonmeister-Tagung in Duesseldorf two days ago. He told me that the AXR4 is discontinued due to chip shortage issues. He could not tell me if there will be some replacement, because it’s Yamaha’s task to build the hardware…
It’s a bit funny that the AXR4 is still advertised on the homepage, but if you click on “find dealer”, you only get links to dealers that do not list the AXR4 anymore (at least dealers in Germany).
The guy from Steinberg also mentioned that there will be a 10 year support of the interface - whatever this means in detail…