It says "Powered by Hugo" at the bottom of the page.

Depending on the theme.

I build my own themes and don’t include that either

Same here

> the title has changed

Only on HN

I think the issue here is that they finally switched the default domain from twitter.com to x.com.

No, it has been just announced, first shipment happens in February.

Maybe. This has a very over hyped Kickstarter feel to it.

I think they were thinking of the App Router becoming stable a few months back, and that was kind of the main feature of 13 I'd argue. Personaly that's when I migrated my codebase too and was a little shocked to hear they are already releasing a new major version.