If you missed the opportunity to get Shadowrun Returns free of DRM during its Kickstarter fundraising and didn't eventually cave for the Steam release, you're in luck. Harebrained Schemes has successfully negotiated with Microsoft to release a DRM-free version of Returns and its upcoming expansions, including Berlin.
Better yet, the game's editor and user-made content -- accessible though sites like Nexus -- will be supported for DRM-free players. Mods are handled through Steam Workshop for that specific version, so it's nice to see Harebrained isn't leaving anyone out here.
Lastly, Shadowrun Returns is coming to GOG.com. The studio "[isn't] sure how long that will take but we'll let you know as soon as we have an answer." Good news all around!
Project Update #66: DRM's End [Kickstarter -- Thanks, Adrian]