GOG ran a Twitch live stream where they talked about the future of GOG and their Galaxy client. The main news is that they officially confirmed a Linux version!
Linux version of GOG Galaxy confirmed!— GOGcom (@GOGcom) October 14, 2014
They are also now giving away Aliens vs Predator Classic 2000 to anyone who signs up, but that's not likely for Linux. This will be a stress-test for the online component of Galaxy. It may be worth trying it out in Wine if you can't hold off for a Linux-compatible game to come out with Galaxy support.
Another tidbit is this:
On-line multiplayer support for classic games planned as GOG Galaxy feature- confirmed on http://t.co/kDEFgFhA0K— GOGcom (@GOGcom) October 14, 2014
It will be interesting to see what Linux-compatible classics are able to use this when Galaxy launches and I can't wait to see!
They also reached 100 Linux games on their store, woo! They added a bunch of new and classic games to the collection with Linux support, nice. I look forward to re-playing the classic Baldur's Gate 2 Complete.