I decided to search Chess.com for "linux" on a whim, and managed to scrounge up two groups. Of the two, this one appears to be the most active, but the activity level seems to be new people bumping old threads, and a whole lot of stuff that's been sitting around for months or years.
I got to thinking about that, and I realized that kind of mirrors the whole state of chess on Linux. When I got back into chess after taking a few years off, I went digging around to see what was new.
Is there anything new?
No, not really. Chess on Linux seems to be frozen in time. Even the commercial apps that are available on this platform seem to release their Linux version with an older version of everything than their main Windows/OS-X flagship.
Fortunately, sites like Chess.com make most of this irrelevant anyway. The Linux chess tools are pretty miserable, so don't use them, and hang out here instead.