Yes this was confirmed that DLC was being looked at initial response was that DLC would be not on immediate drawing board however they took that back in a later comment due to overwhelming player response. I could see them splitting the team in half to work with half the team on Divinity original sin 3 and half on baulders gate 3 dlc content. Originally they had planned to add a dungeon editing tool, weapons rings and armor crafting system confirmed as well. You can also see referance to additional content related to story in game yet to be completed as well as they had mentioned plans to be able to fully explore baulders gate itself. That was advised in prior news feed releases.