Techland might have their shiny new Dying Light 2 now available but they're apparently not even finished with the first Dying Light with a big update out now.
Not another content upgrade though, this time they upgraded their networking. This allows for cross-play between all PC platforms including Steam, Epic, GOG across Windows, Mac OS, and Linux! You really do have to hand it to Techland on how long they've supported this one for now, as it released back in 2015.
Looks like a lot of players have moved over to Dying Light 2 now, as you can see on SteamDB around the release that the player count of Dying Light 1 began to drop.