Hi all! We've just released Update 3 to GOG GALAXY 2.0 which among others features:
Duplicate games stacking
If you own more than one copy of the same game, it will now be stacked into one. Switching between copies is available using a new button on the game view.
Mouse shortcuts (Windows only)
Speed up navigation using back / forward buttons on your mouse, access your recently played games, messages from friends and more by right-clicking on the app icon in the taskbar.
GOG.COM games features
Managing your GOG.COM games becomes even more convenient – download bonus goodies like wallpapers or soundtracks, view patch notes, handle all manual updates from one place.
Let me know what you think!