WordPress very happily notified me that it upgraded its version this afternoon.
I not-so-happily discovered that the body of my index page is now coming up as a 404 error. (Thanks again to my dear friend Rhonda for letting me know; it’s never fun to be the bearer of sucky news like that.)
The good news: the data is still there. I can see it when logged in. The rest of my site’s content is still present for visitors as well. There’s just some incompatibility issue with my theme that Elegant Themes will need to fix to get my main page working. Tech support knows and I am grateful for their aid.
In the meantime… enjoy the site, just try to ignore the ugly entry way.