Well, after the day ole Twitch stream, Bethesda has teased their next game. There wasn't much shown except the inside of a Vault where a party is being thrown. Fallout 76 will be their next game.
Set to the John Denver's Take Me Home, Country Road, Vault 76 is situated outside Washington DC. We see a vault dweller put on a pip boy wearing a Vault 76 suit.
We'll get more info at E3, but for now, take a look at the teaser.