Okay, they will release story DLC with proper V's story conclusion. Paid one, like Blood&Wine. You will buy it, thus cementing CDPR's fall to the dark side, to EA business model.That assumes that the endings to the main game are all she wrote, and there is no further story content involving V that is set after those endings.
It's quite likely however that the DLC will alter those endings. Consider that Geralt settling down in Corvo Bianco with either Yennefer or Triss is from Blood and Wine, not the main game of the Witcher 3.
While I doubt Cyberpunk's story DLC will wrap up with anything quite as upbeat as Blood & Wine's ending, V's terminal illness may end up proving somewhat less terminal than advertised. That hope for a cure was dangled in two of the endings for Cyberpunk may hint that it is going to be the focus of DLC, in either case.