Looks like #Fedora will be the next #Linux distribution dropping support for 32-bit i686 architectures with #Fedora31, though 32-bit applications will still be supported in 64-bit installations.
At this point, I don't think it's going to be a big deal for most users. Anyone still running 32-bit x86 platforms have many other options, especially on the BSD side if necessary.
https://fedoramagazine.org/in-fedora-31-32-bit-i686-is-86ed/