A full 4k scan of a 35mm print of TPM would be perfect for my PT color grading project. I’m very much looking forward to this. It would work as just the right color reference for regrading the new 4K master, which I believe is just the same colors as the blu-ray but in 10 bit HDR.
Meanwhile the new 4K versions of AOTC and ROTS are accurate colors to the original 2K DCP’s, with the exception of it now being 10 bit HDR, and it’s easy enough to throw on a print emulation lut of the correct stock onto those to create 35mm print accurate colors of those. Still it would help to have 4K scans of 35mm prints anyhow just to make sure that I can tweak the emulation just right to match.
The new UHD for AOTC has contrast, colors, saturation not looking at all like the 35mm theatrical release/trailers though. I do recall the digital projection for AOTC was surprisingly a bit duller than the 35mm version (unlike with TPM), so perhaps it isn’t as far off from the digital AOTC release. But I still feel like it might be duller and it did get some DNR.