The biggest update in Fallout 1st hip package.
However, developer classic Fallout dialog options players had been missing from the previous games in the franchise, in addition to offering a plethora of new in-game items and quests.
According to the Wastelanders patch notes available on the official Fallout 76 website, the update is also adding an absolutely massive amount of bug fixes to the game. The message states many of the "close to 1,000" bugs "were reported to us by the Fallout 76 community" and includes changes to auto-scrapping, V.A.T.S., a plethora of weapons, perks, quests, and much, much more. Not even Bethesda included the full list of changes made to the game, but did provide some highlights of the more important fixes which have been implemented.
Other changes to Fallout 76 include fixing the com so it more accurately represents where objects are located in the world, adjusting the fanfare and rewards list so it appears on screen properly and at the right time, and the inclusion of the ability to revive downed players with Diluted and Super Stimpacks. Thankfully, small annoyances which Fallout 76 players have grown accustomed to, such as an automatic weapon not firing once a player enters V.A.T.S. and exiting a workbench only to immediately enter it again, have also reportedly been eliminated.
While it's nice to hear so many changes and fixes have been applied to Fallout 76 in addition to all of the content already included in Elder Scrolls 6 news at some point in the future, after all.
Source: Bethesda