Not to mention it is the final boss in the SoulsBorne series. From said the next titles will not be DS4 or Bloodborne 2. They are currently working on 3 games one of which is supposedly going to be very similar to the SoulsBorne series. We don't know whether DS3 is the last game the fire is linked in or if From plans to bring it back in the future. For now though, The Soul of Cinder is the final boss in the series.