since Arch Linux announced their decission to drop i686 repos this autumn there has been quite a bit of weeping.
But the end of sorrow has come!!
Two (at least two) guys with mission and vision have taken up the challenge to keep 32bit machines usable beyond autumn 2017. Their nicknames are tyzoid and deep42thought.
"Usable" for a computer means, of course, what else, that it does package management with pacman.
I've recently tested their install medium and was able to install an Arch base system using the repos of archlinux32. My report on that is on archlinux32 forum: https://bbs.archlinux32.org/viewtopic.php?id=12
It is quite an achievement already, but they still have some challenges ahead of them. At the moment they struggle with some packages which fail to build keeping all the rest of the packages from being updated.
So If someone maybe from @Manjaro-Team knows how to help them, please, contact them on their forum, github, mailing list or whatever. I think it would be a good thing to help, because there are some i686 Manjaro users whou would appreciate to be able to keep using their machines.
If you just want to test install their ISO go ahead and report on their forum. Read my forum post there on how to configure pacman mirrors to use archlinux32.org mirror (and how to install archlinux32-keyring).