The  Arch  Linux  devs  are  considering  making  i686  a  "secondary"
 architecture or even dropping it:

 https://lists.archlinux.org/pipermail/arch-dev-public/2017-January/028627.html

 I'm happy that I replaced my last i686-only box almost four years ago.

 I think this is a good thing to do. The thread  on  the  mailing  list
 made  it clear that i686 is barely tested today, which is a bad thing.
 Do or don't, but don't pretend.