

Starting with the Public Beta and up through 12.2, there have been 159 macOS releases, both major and minor.Some random notes, updated from the original post: This has happened a few times over the years.
#EXCEL FOR MAC OS X 10.9.5 UPDATE#
This is to keep the version numbers in the proper order, even when an older OS received an update after a major new release came out. Some entries may appear out of chronological order (i.e. Note: The Days column reflects the number of days between releases.

Ⓘ Leopard - First universal binary release Ⓘ Snow Leopard - First Intel-only release Ⓘ Lion - App Store only (USB stick later)
