https://wccftech.com/fallout-76-patch-survival-mode/

The upcoming Fallout 76 patch #5 and the game’s survival mode have been further detailed by Bethesda.

Fallout 76’s “dangerous” survival mode is separate from the game’s adventure mode and has fewer PvP restrictions. According to Bethesda, the mode is intended to provide players with “more demanding, high-stakes, and deadly adventures.”