Pretty big and unexpected news. Weird that they chose AMD even though they have great success making their TPU accelerators. This is something they might be doing only due to time related pressure because they have enough money to deploy their own licensed ARM CPU cores if they wanted or develop something in-house. Could also be that they lost someone important from their silicon team.
Ahctually....I can see someone creating a Transmeta Crusoe like AI accelerated CPU that optimizes running code the longer it runs. That would be cool. As then developers can just focus on writing code and not spending time optimizing it.