I needed an emergency machine last week (My 2011 Pro finally died), and I opt'd for a £200 Chromebook (EDGAR), thinking all I need is a browser and a terminal right this second and I'd worry about what Apple is doing later.
A solid Linux laptop with working sleep, working wifi, great battery life. Tad underpowered but hey it's £200. I'm _really_ impressed.
If Google relaxed the constraints a little on the OS, or supported a Crouton-like workflow for containers without having to stick it in dev-mode, they could make A LOT of developers very happy.