Uh, we have no information regarding whether places like Beregost, Nashkel, Candlekeep, or say the Friendly Arm Inn will be added to the area near Baldur's Gate. The original game also had a settlement called Ulgoth's Beard, that was added in the expansion. I think it would be a good way to make connections to the original games, since Larian wants to make 'meaningful connections' to the original series.
These areas were not too large, Beregost was the largest, just a few quests between them really. However, I would be surprised it none of them made an appearance.
Yes, I'm hoping that we'll get a stop-off in the Friendly Arms Inn, at least, given that it is so close to Baldur's Gate. And it would be great to have a reason to visit Candlekeep. Within Baldur's Gate itself, we already have had at least one character in EA say that they drink in the Elfsong Tavern and to find them there, so it's reasonable to think that will make a reappearance. And at one point a Balduian PC can say that the Blushing Mermaid is their kind of pub, so it feels like that's a decent bet too.
