[bell-cot]

Doing a quick compare with the 12.1 Release notes - https://www.freebsd.org/releases/12.1R/relnotes/ - I will speculate that the 13.1 Release Notes are not a finished document, and quite a bit more will be added before the April 26th (current schedule) "final" Release of 13.1.

[cylinder714]

From the original post, "Please note, the release notes page is not yet complete, and will be updated on an ongoing basis as the 13.1-RELEASE cycle progresses."

[grahamjperrin]

https://news.ycombinator.com/item?id=30649753