I also agree in principal and agree that the GitHub post with additional context is nice.
But I'm wondering if this is rather feedback for the Git team to do better release notes (like the GitHub team here) as GitHub will always be biased with their release notes, so it would be better for everyone is the release note from Git were as well.
In this particular release, `send-email` is mentioned in the top in the mailing list as it has a new feature.
However, GitHub have zero interest in people to use `send-email` as they are basically a competitor to the `send-email` command. So they simply don't mention it in their release notes.
This is of course bad, and I'm not sure why they wouldn't at least try to remain impartial. But this is why we need the release notes of the Git team to be better.