Basically just a small form PC. Pretty much every component that will be messed with is just an off-the-shelf part. Not really any surprises here, but it's nice that it's all confirmed.
The other components are easy of course.
I'd be happy to be proven wrong, because I'm definitely in the market for something like this. More than 50% of my gaming time happens when I take time off - which usually means I'm visiting family for a few weeks, and taking anything bigger than this on a plane or train is not realistic. I was hoping Thunderbolt might solve the problem with external GPUs, but right now that seems more trouble than it's worth.