Even if there were only a few hours apart from the official release of The Witcher 3 Hearts of Stone, developer CD Projekt RED announced that it won’t be released today afterwards. The delay affects only those who have ordered the game, and who live in North America.
The delay was explained as a result of some “logistical reasons”. There wasn’t announced any other release date, but probably the situation will be solved as soon as possible. The game is available digitally on Xbox Store, Steam, PSN and GOG.