fwiw, I think Intel declared the Xeon-D line dead. They're not planning anything new there.
That said, I don't think they would need much to make a Core series processor into a SoC; the chip does almost everything you'd need already; memory, some of the pci-e, (some) usb, (some) sata, legacy IO are already in the CPU for both Intel and AMD, and both offer chips with GPUs on board too. AMD has a 'chipless' chipset available for ryzen, the A300, it even has a new performance version, the X300. There's still plenty of other chips on the board, but there's nothing that's really a chipset.
That's really disappointing, but entirely unsurprising. It seems that the "market" doesn't ever want anything new, unless someone hits them on the head it. Like what Apple just did.
The neural engine and DSP on-chip are actually what I find most interesting about the Apple chip. It would be nice to see that start to happen with other manufacturers.
That said, I don't think they would need much to make a Core series processor into a SoC; the chip does almost everything you'd need already; memory, some of the pci-e, (some) usb, (some) sata, legacy IO are already in the CPU for both Intel and AMD, and both offer chips with GPUs on board too. AMD has a 'chipless' chipset available for ryzen, the A300, it even has a new performance version, the X300. There's still plenty of other chips on the board, but there's nothing that's really a chipset.