Bethesda Softworks tweeted that the brand new survival mode for Fallout 4 will be releasing this Friday, May 6th for PlayStation 4 and Xbox One users in the 1.5 update. Survival mode will make it much harder to play the game where the player has to focus on surviving against enemies, like normal, but they hit harder and you have to address your hunger, thirst, and sleep. There is also no fast traveling, already scarce items are even scarcer, everything has weight, and much, much more. They are not pulling any punches with this survival mode, so you must be ready to take it slow and smart or die at every turn.
— BethesdaGameStudios (@BethesdaStudios) May 4, 2016