The "Next" under https://etcd.io/docs/ seems missing something - can we change it to "Upcoming" or "Upcoming version" or "Current development" something like that.
Also, once clicking Next, under https://etcd.io/docs/next/ it shows "Next Doc" which is also little difficult to read.

Opening this issue for brainstorming.

@nate-double-u @chalin @ptabor @gyuho