Porteus

"...developers barely test the 32-bit support, so the proposal for Fedora 27 is to officiate that by stopping the i686 kernel builds.

[...]

Fedora developers argue that upstreams are no longer interested in x86 32-bit problems and the bug reports basically go ignored.

[...]

So unless there is magically a capable group of volunteers wishing to take i686 kernel maintenance more seriously, Fedora 27 could do away with its 32-bit kernel build. This will free up some development resources and also make it easier for QA/testing and quicker to push out updates."

http://www.phoronix.com/scan.php?page=n ... -i686-Kern

It is a trend that is happening on many Linuxen distributions. The x86_64 is the target, 32 is still supported, but there are fewer machines out there and less developers working on it

Google Chrome dropped support for all 32-bit Linux distros last year , i'm surprised Firefox didn't do the same.