It is quite annoying to know where you bought it has a different release time than optional places. Since I am not in America, and the time difference is quite a bit, these delays make it more and more likely I will need to wait another whole day to play. I can deal, but it still stings a bit to know I bought the game here over steam, my first time doing so, and yet come to find out it was released sooner on steam than GoG.
Is it the end of the world, as asked by Grargar? No, of course not. Does it suck that the store we bought it from doesn't have it at the same time their major, bigger competitor does? Indeed. Especially if you have been waiting to play it.