rails--rails/railties/CHANGELOG.md

• No longer add autoloaded paths to $LOAD_PATH.

  This means it won't be possible to load them with a manual require call, the class or module can be referenced instead.

  Reducing the size of $LOAD_PATH speed-up require calls for apps not using bootsnap, and reduce the size of the bootsnap cache for the others.

  Jean Boussier

• Remove default X-Download-Options header

  This header is currently only used by Internet Explorer which will be discontinued in 2022 and since Rails 7 does not fully support Internet Explorer this header should not be a default one.

  Harun Sabljaković

Please check 7-0-stable for previous changes.