Actually, judging by the date on the pip-boy right from the outset, it is set at the time when Vault-Tec and the Government deemed it safe enough for the American population to go out and rebuild, hence; Reclamation day being celebrated in the trailer. I imagine that since the entirety of the US wasn't bombed to smithereens I hope to see more greenery and color in this one. They were on the right track with Fallout 4 but, it could've used a lot more Retrofuturistism and vibrancy. Excited to see what more comes of this on June 10th as I believe Todd announced.