But I don't understand this. It took six months to develop this patch. There was external testing with players. Couldn't you fix the bugs without generating new ones? I don't understand.
they already had most the code left over so no it didn't take 6 months
giving Steam users a few months head start is about marketing... thats not the same as "testing"
fixing bugs without generating new one takes a solid understanding of code + documentation ... Larian only has one of those things