Since February, in fact. Sorry about that; life happened. Hopefully that starts changing soon, as in today.
The first update, though, is that I'm going to stop updating my macOS releases post—I think it's served its need, and it was becoming arduous to keep up with. I have added a link to Wikipedia's macOS history page at the top of the post, as you can find much of the information I provided there. I know it's not exactly the same, but for my needs, it's good enough.
I do plan to resume posting, starting very shortly with a post that somewhat explains my absence over the last few months.https://robservatory.com/wp-admin/profile.php