never thought i'd see an actual map expanse but here we go
"War never changes, but that sure doesn’t stop Appalachia from mutating! Later in 2024, we’re expanding our map southward, deep into the wooded heartland of Shenandoah. This uncharted, once-tranquil expanse in the heart of Virginia will bring a new questline, factions and rewards."
https://fallout.bethesda.net/en/article/3M71n2zE0KpcvLZld8jF9x/fallout-76-in-2024