Nobody has ever given proof that the original Blu-ray was from a 2K transfer. A friend of mine checked with a buddy of his at WB and he was told this new Blu-ray will use the exact same transfer as the original release. I have no reason to doubt that this is the case, and that the original...
Are we so sure the previous Blu-ray was based off a 2K scan and not a 4K scan? I've never seen anything regarding the "old" Blu-ray of THE EXORCIST being based off a 2K scan.
Vincent