The update implements the revamped Survival difficulty which was undergoing testing in a Steam beta for some time. The Creation Kit SDK for Fallout 4 and mod implementation entered beta a few days ago and is still being tested in the current beta branch.
The new Survival Difficulty implements drastic changes to the gameplay of Fallout 4. Fast Travel is completely disabled so players have to manually walk from place to place. Quick saving and manual saving have been disabled in favor of a new mechanic where you can only save your game by sleeping at an unowned bed while outside of combat. The enemies and the player both deal and receive more damage in a similar fashion to Ranger Mode in the Metro series of games. Food, Water, & Sleep are all needs that must be maintained, and a slew of new diseases (as well as medicines to treat and cure them) are part of the new difficulty.
Players will also benefit from the new Adrenaline perk that is exclusive to Survival Difficulty. The perk increases damage as you get kills and is reset after you sleep for any period of time. This acts as a counterbalance to increasing fatigue as the player gradually gains debuffs from lack of sleep.
Any characters that were on the old style of Survival Difficulty were greeted with a message stating that their character had been downgraded to "Very Hard" difficulty due to the changes in Survival Difficulty.
The 1.5 update for Fallout 4 also includes a slew of smaller bug fixes and changes. Ada, a robot companion introduced into Automatron, should now properly arrive at settlements she was sent to. Automatrons can now be properly assigned to vendors at player-made stores. A variety of other general bug fixes and improvements have also been implemented.
What do you think of the additions to Fallout 4 in the new Survival update? How do you feel Bethesda has treated the post-release content of the game? Let us know in the comments below!