D&D 5E - Baldur's Gate 3 will allow us to explore the whole city of Baldur's Gate Seamlessly

Well for one thing it looks cooler,no surprise there, and its alot bigger then BG1 because post Spellplague it added 9 wards, which you can see in the video.

Apparently there are easter eggs of events that occurred in Baldur's Gate Dark Alliance games as well.