If you use Linux-based operating system Ubuntu to play games on Steam, you might want to think about an alternative solution. As per a tweet from Valve coder Pierre-Loup Griffais over the weekend, future versions of Ubuntu will not be officially supported by Steam, nor will it be recommended to users as a compatible OS.
The first version of Ubuntu to not be supported will be 19.10, which is scheduled to release on 17th October. That means Ubuntu users have just shy of four months to enjoy official Steam support before it's a thing of the past.
Ubuntu 19.10 and future releases will not be officially supported by Steam or recommended to our users. We will evaluate ways to minimize breakage for existing users, but will also switch our focus to a different distribution, currently TBD.
— Pierre-Loup Griffais (@Plagman2) June 22, 2019
Per Engadget, the loss of support is a result of Ubuntu cutting 32-bit x86 components in the planned update. In their tweet, Griffais says Steam will "evaluate ways to minimise breakage for existing users", so some work will be going into it, but if you're a Ubuntu user it's wise to assume your Steam library won't work as it currently does. The wording "not officially supported" suggests some parts of Steam may still work, but Valve can offer no guarantees that it will.
If this is going to affect you and your game library, perhaps it's wise to find an alternate operating system solution before October is upon us. [Engadget]