Is there anywhere to find a comprehensive list of updates made "Under the hood"? Sure the new UI is cool and all, but what are they doing to make the OS better? In a previous life I was a mac administrator and every update, apple would remove some binary and suddenly we couldn't natively make calls to LDAP or something.

That’s why I miss the old Ars Technica reviews.

The closest I’ve seen is this Apple PDF and I’m not sure it’s what you’re after: https://www.apple.com/os/pdf/All_New_Features_macOS_Tahoe_Se...