K80 is still Kepler based. Why not Maxwell?

https://thevirtualhorizon.com/2016/04/09/whats-new-in-nvidia... (tl;dr - you have to pay more to wrap the GPU access in a VM. Like, $550/more, plus a year of software support, according to that article. IANAL and haven't read any of the license details, so I don't know if there are more gotchas.)

K80s are only our next release, we do not plan to stop there.