Still, it's kind of an annoyance just because the form factor of the computer is still so closely tied to the motherboard, even if the board itself is trivial. Are they going to get a ton smaller and just be CPU+RAM with cable ports for PCIe/USB busses?
I expect that Intel will do what AMD and Nvidia are doing presently with GPUs, and what they used to do with their chipsets: Sell the CPUs into the various motherboard manufacturers, and let them sell the complete package to the consumer. They can implement any form factors they like.
Of course with a sufficiently punitive contract that Intel retains control of everything.
pci-e 2.0 x32 is 16gb/s. thunderbolt is 2.5gb/s