It has been a tough few days for Linux games, but the fight is over. In response to Canonical's plan for 32-bit compatibility libraries, Valve has announced that it will "probably" support Ubuntu 19.10 and 20.04 LTS from developer Pierre-Loup on the Steam forums on June 26. He explains the whole situation:
In response to the concerns that we and the general public have expressed, the Ubuntu project has recently discussed a more conservative approach in which a selection of 32-bit libraries would be on the host system for at least 20.04 LTS still available. We still do not particularly appreciate the removal of existing features, but such a change to the plan is extremely welcome. Given the information we have so far about this new approach, it is likely that we can officially continue to support Steam on Ubuntu.
However, everything is not rosy for Ubuntu. Valve currently recommends Linux players as Ubuntu's preferred officially supported Linux distribution. This could change in the future:
The Linux landscape has changed dramatically since we released the first version of Steam for Linux, and as such, we are considering how we want to handle distribution support in the future. There are several distributions on the market today that offer a great gaming desktop experience, including Arch Linux, Manjaro, Pop! _OS, Fedora and many others. In the future, we will work more closely with many other distribution supervisors …
Apart from that, we currently have no specific information about which distributions will be supported in the future. Expect further news in this area in the coming months.
Valve is not enthusiastic about Ubuntu's likely plan to end compatibility with older 32-bit software after Ubuntu 20.04 LTS. However, there are no immediate changes that will be announced. Linux gamers can continue to use the next versions of Ubuntu to run the Steam game library. The community has been listened to.
If you are interested in this topic, you should read both the Canonical and Valve statements. Many thanks to OMG! Ubuntu to recognize.