It's hot man. Hot. The XMOS chip is a hot sucker. I've got an XS1-G4 dev board. Granted the specs for the mobo are for a single tile XMOS chip. A good side benefit of having a pile of them would be a space heater perhaps?
It's a neat chip though. The development tools are nice and the documentation is good. It's a lot of fun.
I won't be buying the new hyperion motherboard, but I will be using the XMOS chip in my embedded projects.
(and by hot, I mean temperature hot, burning hot. Hot like it would suck to use the quad core chip for portable apps)