I’ve been looking at the recent 2160p version floating around, believed to be from iTunes.

Using some of the shots here as a guide, its clear that the excessive greens and reds of the Lowry have been toned down a bit, it’s now kind of half way back to the look of the SE DVD. More fine detail is a struggle to see - numbers on the gauges do appear a bit sharper. In the case of faces there isn’t a huge difference to extra detail, the tweaked Lowry holds up well for what it is but no such tools are needed and it just seems more natural and organic now.

I’ve spent a fair time looking at all of them actually, expecting to see more fine detail due to the jump in 4K. I’ve pretty much drawn a blank on that front and if I didn’t know better was looking at the HD blown up.
The 9 that were scanned at 4K are also pretty much the same except for Diamonds Are Forever. There is a definite uptick for that one and for Golden Gun, presumably a new scan. It’s slightly more cropped, more desaturated but more fine detail.

In the case of Daylights though, clearly some more work was done… the grain pattern is possibly different and a lot more visible. When the Tangier caption appears there is a sudden overlay of even more corse grain due to that optical. There isn’t in the Lowry.
This could still very much be the MGM HD master though.