The films that were originally scanned at 4K - Dr. No through to Live and Let Die, plus Moonraker - appear to be from those existing Lowry scans - some look a little better than their respective blu-rays, some look pretty much the same.
Dr. No looks a lot darker than the disc, with seriously...
Yes, and there are 4K DCPs of all the films. I've seen probably about half of them theatrically and I'm fairly certain that the new masters are based on the old Lowry 4K scans. The films that weren't done at 4K the first time around have new, superior scans.