GOG aren't having the best of times recently, with details about their financial troubles painting a bleak picture, although it seems they have something of a plan. Later they announced some changes, including a tweak to what they mean by DRM free.
Now? They're attempting to go back to their roots, at least little, to woo customers back to their store with a small revival of "Good Old Games", what they were originally known as. The start of this is the addition of a Good Old Games tag, which GOG say will "showcase over 500 games that our Team has deemed iconic classics".
This is one reason I liked GOG originally, their commitment to bringing back and supporting old games, but they lost their way somewhat when trying to become just another store. Hopefully they will be doing more as time goes on to revive old games. Plenty of older games nowadays can run on Linux just fine through all sorts of open source game engines, and having an easy and legal place to get them for the data files is great.
To go along with this announcement, today they released the classic FPS, The Wheel of Time. GOG say this was done in cooperation with Nightdive Studios and that the "efforts and in-house expertise of GOG’s Tech Team the game received modern OS compatibility and hi-resolution support". Although, by modern OS, they only mean Windows specifically.