Not sure why people think Larian is soon done supporting the game, when in reality the game is nowhere near close to being done as it is still being treated as a fully released Early Access with tons of stuff still coming.
Apart from Larian stating that they're working on new stuff even in their own patch notes, one of the developers also tweeted something they probably shouldn't have about some juicy content coming, which they have deleted since soon after (there are videos that still show the tweet though). Tons of dialogue are also being actively adjusted and added, which is why since Update #5 so many are breaking, interrupting or not working at all.
Personally I won't be satisfied until all the bugs are fixed, especially the story elements which do not connect properly (doing one thing, but the game thinking we did another or not even properly reacting to it). At the very least the issues have to be fixed, but this is Larian and they love their games. Working silently towards a Definitive Edition is a step that makes most sense.
Why do I think one is coming? Well apart from all the issues currently plaguing the game that need to be fleshed out and numerous bugs, Karlach herself is on none of the promo material for the game, not even the in-game loading screen. Hell, she's not even on the forum banner at the very top of the forums or anywhere else for that matter.
The game won't be done until Karlach gets her rightful spot on the promo materials, which is going to happen once the Definitive Edition is ready which would then be the game's actual full release just like DOS2 was.
