So excited for this. While I really enjoyed The Witcher 1 and 2, I am still amazed at the quality and depth of TW3. I'm almost to the end of the main game and about to start the Hearts of Stone quests. I hear great things, that it's better than the main game, etc., so I can't wait.
Judging by the name of this, "Blood and Wine," and the mysterious and dangerous description of High Vampires in the Bestiary, I'm really hoping the expansion revolves around a High Vampire. I haven't read any of the books, so I only know what I've read there.
I could see it playing out as not being about a completely evil being and offering two sides to the story. Playing on our sympathy strings, even though he (or she) seems to be at least somewhat of a bastard
Hoping the release date is accurate too, as it will give me plenty of time to play through Uncharted and Overwatch.