So I think there is something cooking up - Patch 2 was relesed os September 3, and the interview was relesed september 8th, and Swen said about Karlach: "We said okay, let’s give an updated ending. An optional ending, because they are all the other ones for Karlach."
And that was in My opinion about Patch 2 content they added.
But then he said:
"So we are adding in extra epilogue stuff. It’s actually underway." - that is said after releasing Patch 2 epilog stuff, so I think They might actualy doing something
By looking how this thread grows, and Larian being known to listen to community - I have good feeling
