GOG DRM free, version 184.108.40.206 you just need to install the patch (when its officially release) and you are good to go.
Released: May 19, 2015
Company: CD PROJEKT RED / CD PROJEKT RED
Languages: Audio and text: Deutsch, English, français, 日本語, polski, Português do Brasil, русский. Text only: العربية, 中文, český, español, Español (AL), magyar, italiano, 한국어
The Witcher 3: Wild Hunt, the RPG epic with a mature, non-linear story that reacts to your decisions, a vast open world with a living ecosystem, dynamic and tactical combat, and stunning visuals, is available for pre-order on GOG.com! We are part of the CD PROJEKT family, so pre-ordering here also gives you the chance to support us directly!
2. WAIT FOR DAY ONE PATCH!!!