Ubuntu developers clarification, people thought that Ubuntu will drop support for running 32-bit applications in Ubuntu 19.10 and subsequent versions, but "simply not the case." So is this how it all about? A few days before the Ubuntu team has just announced plans to release in the second half of Ubuntu 19.10 (Eoan Ermine) will stop supporting 32-bit x86 architecture.
The notice message is read as "implies Ubuntu will not support 32-bit applications", people have reacted strongly, especially games manufacturer, Steam and even that is no longer supported Ubuntu 19.10 and later, Wine developers are also forum actively discuss our approach. 
June 22, Valve developer Pierre-Loup Griffais inform users on Twitter, Steam moving away from support for Ubuntu.
Griffais the tweets said, Ubuntu 19.10 and a future version of "Steam will no longer be officially supported, it will no longer be recommended to the user," and suggested Linux gamers to switch to other Linux distributions.
Since the 2012 launch of Steam for Linux, Valve has supported Ubuntu, suddenly stopped support may be a big problem. 
As previously understood that the question of whether to allow 32-bit program is run on a 64-bit device. Many games on Steam only 32. And various other software, most game developers will not continue to receive updates or after release to release 32 games will always be 32.
Soon, things have reversed. Ubuntu developer Steve Langase aware of the seriousness of the problem, he seemed to re-examine the "32-bit libraries will be removed in Eoan Ermine in" concept, and respond in the original mailing list:
I'm sorry, we give the impression that we are 'no longer supports i386 applications'. But in fact, it's not. We want to remove an update to the i386 libraries, these libraries will be frozen at 18.04 LTS version. 
This means that Ubuntu is just to freeze its i386 archives that make it a snapshot, not to delete support for 32-bit applications. Mail them in the beginning did not make it clear that rely on the use of 32-bit or 64-bit database applications (such as Steam, Wine and many hardware drivers) will continue to run on Ubuntu 19.10.
As a result, Steam does not actually need to give up support for Ubuntu. It will be more clearly stated after Langasek also expressed i386 applications (including games) how to run on Ubuntu after version 19.10.
So, Steam Ubuntu if they would return to the embrace of it? How will this drama end?
This switched: https://www.linuxprobe.com/ubuntu-does-not.html