And even when AMD does move their mainstream desktop processors to a new socket, there's very little reason to expect them to be trying to accommodate multi-GPU setups. SLI and Crossfire are dead, multi-GPU gaming isn't coming back for the foreseeable future, so multi-GPU is more or less a purely workstation/server feature at this point. They're not going to increase the cost of their mainstream platform for the sole purpose of cannibalizing Threadripper sales.