If you've ever been stuck for something to play on Steam, Valve have made a small step towards reminding you of games you own that you've not actually played.
Arriving in the Steam Beta Client on May 6, they added a new 'Play Next' Shelf which has a list of games you own that you've not played. It's the same as the recently released Steam Labs experiment of the same name, except this is in the client to remind you each time you load up Steam.
For Linux gamers it might rub a little salt into some wounds, like Destiny 2 showing up there even though I can't play it at all on Steam/Linux. Although I can on Stadia…thankfully if you hide games they won't show up.
Also, since it's using the Shelf system it can be moved around or removed entirely if you don't find it useful. Personally though, I think it's a great feature as more people build up a huge library of games it's easy to forget something you might end up enjoying.
Valve also recently fixed a Linux issue in the Steam Beta with the Cloud Sync and game downloads suffering problems when ipv6 is completely disabled in the OS.