It seems that Ubuntu 32bit will follow the same path as other important distributions. Canonical will stop releasing ISOs for installations on 32bit systems from the next releases.
Canonical's Dimitri John Ledkov sent a message through their mailing list to the publishing team, instructing them not to release the 32bit ISO for the upcoming Ubuntu release.
"Dear Release team, please follow the steps below and remove the Ubuntu Desktop i386 daily-live ISOs from the Beta and Final releases of 17.10."
The Manjaro distribution did exactly the same and we can now be sure that many more distributions will follow.
I have Ubuntu 32bit what do I do?
Ubuntu users with 32-bit machines need not worry, as with the Manjaro, will be able to upgrade to the latest version (when released) on their 32bit system.
The above announcement only affects users who want to install Ubuntu from scratch through an ISO.
For those who are interested in downloading the Beta 2 of Ubuntu 17.10 released today can do so from the following links:
Of course there will continue to be many notable distributions that will continue to support 32bit systems.