Larian has moved on from Baldur's Gate 3 and won't be returning for another entry in the series. Besides the occasional maintenance updates, the game won't be receiving any new content or DLC. Of course, this doesn't mean that we've seen the end of the series; Wizards of the Coast has found a gold mine in that respect.
However, WotC won't solely rely on Baldur's Gate to leverage video game audiences, and has already announced a new Dungeons & Dragons game with Giant Skull, the studio founded by God of War 3 and Star Wars Jedi: Fallen Order's Stig Asmussen. That being said, Wizards of the Coast president John Hight has said "of course" Baldur's Gate 4 will happen at some point.
In a conversation with The Game Business (via GamesRadar), he said that a successor for Baldur's 3 will definitely happen, but the D&D game that Giant Skull is working on will be very different, and appeal to wider audiences. "Baldur's Gate is an incredible game," he said. "And of course, we're going to do a successor. This is not the successor to that game."
"We go to Stig and his team to tell an incredible story and bring D&D...