Veteran chip designer Jim Keller, who worked on AMD's Zen processor core micro-architecture, has called AMD stupid for cancelling the sister project K12, which was being developed using Arm.
Project skybridge RSS
In a recent interview, AMD has said that it is very confident in its own abilities and isn't intimidated by the arrival of Apple's M1. The ARM-based M1 has replaced Intel's x86 CPUs in the Macs.
AMD has announced the first details of "Project Skybridge" which will allow for future x86 and ARM processors from the company to become pin-compatible with the same motherboard.