https://www.pcgamer.com/new-quests-and-events-coming-to-fallout-76-plus-another-increase-to-stash-size/

Bethesda announced today that in addition to the new PvP "survival mode" headed to Fallout 76, there will be a series of updates for those more interested in PvE. Called "Wild Appalachia", the updates will be "our first big content drop of the year and spans the next few months. In addition to new quests, events, and challenges it will also bring new content to C.A.M.P.s, Crafting, and much more."

No specific details were given, though the announcement also promised a 2019 roadmap which will arrive later this month. The Wild Appalachia updates will be on a weekly basis, with previews posted about the new features being added each week. Survival mode is still scheduled for a beta in March.