It was the first time the catalog was officially released in a higher resolution than the standard 16-bit CD.
Unlike recent 2017–2023 "De-mixed" versions (like the Giles Martin remixes), these FLAC files maintain the original stereo mixes approved by the band and George Martin, just with improved modern fidelity. FLAC (24-bit) vs. CD (16-bit) The Beatles - Discography -FLAC-