This version of Deus Ex Human Revolution is not the same as the version that is being sold on GOG. The version that is currently available, the so-called "Director's Cut" is a vastly inferior version (in most cases) of the original title that is, in and of itself, a PC port of the Wii U port of the original version of the game. The Wii U version, AKA "Director's Cut" was based on an outdated build of Deus Ex Human Revolution and introduced a number of graphical bugs and glitches and more or less butchered the lighting of the entire game. Furthermore, the developers responsible for the Wii U version removed the gold filter from the game entirely, with no way to re-enable it without mods, ruining the entire mood and atmosphere of the game for those that enjoy it.
The Director's Cut was originally only meant for release on the Wii U, but after it became evidently apparent that the Wii U was a total failure, Square Enix quickly and haphazardly commissioned the Director's Cut to also be released on the Xbox 360, PS3, and PC—in the case of PC, the original version of the game was delisted from all stores and replaced with the inferior Director's Cut Wii U PC port junk that we currently have for sale on GOG.
This page is an important resource in having the original version of Deus Ex Human Revolution restored—ideally being bundled together with the "Director's Cut" version, to give people the choice on which version they would like to play, as some people do enjoy the boss fight alterations made in the Director's Cut (arguably the only good change the Director's Cut made to the original game).
Personally speaking, the desecration of the original game's artistic vision in the Director's Cut is not worth having improved boss fights. Human Revolution is one of my favourite games of all time and I remember when it was originally announced as Deus Ex 3. I hope some day GOG can have this original version of the game restored from its banishment in digital delisting hell.