Only thing I'm aware of is that Larian is cooking up more stuff for romances in their community post here.

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We are still actively working on improving kisses for all romanceable companions, so expect even more new animations featuring unique snogging methods for our characters. No romance partner has been forgotten! Some characters were just a little too eager to get out.

Whether any romantic quests are involved I've got no clue, but there sure are more things to come.