Despite this being a point release, there are a few breaking changes.
The kernels for both the Dropbox Desktop Application and Microsoft OneDrive are called out as deprecated in the release notes, and as such both have updates and/or changes coming to overcome this change.
However, the more impactful change is the removal of Python 2 (/usr/bin/python).
This has a number of ramifications, and is really a very large change to drop in a point release.
See below for more details on this, and how it will likely affect every Mac Admin.