Interesting to see the common socket proprosal - this harks back to the days when AMD's x86 chips were sharing a slot with the DEC Alpha (although I'm not aware of anyone ever making a motherboard that could host either processor).
I had one which, with a bios change was supposed to be able to run an Alpha.
Fun fact, the board - the Asus K7M, came out at a time when Intel was putting pressure on vendors not to support the (brand spanking new) AMD Athlon. The vendors were so scared that the first few shipments of K7M boards came in plain white boxes, without a reference to the manufacturer anywhere in site. Not even the fine print.
This must still go on. Someone brought me a Samsung laptop an its processor made no mention of AMD anywhere. even in the pc management. It just reports as a quad core cpu.