Merge pull request #583 from humanmade/backport-582-to-v20-branch

[Backport v20-branch] Updated some wording. AddNode.js section.

Author: mikelittle

other-docs/guides/upgrading/v20.md

@@ -60,6 +60,26 @@ we welcome feedback.
 
 ### WordPress 6.6.1
 
+## Node.js
+
+Altis now supports running Node.js applications alongside WordPress, utilizing WordPress as a headless API. See [our Node.js
+documentation](docs://cloud/nodejs/) for more information. This is an experimental feature, you can enable it in Local Server, and
+we welcome feedback.
+
+### WordPress 6.6.1
+
+WordPress 6.6 brings lots of new features, bug fixes, and improvements across the board. In particular, there are improvements
+in performance and accessibility, and new features and updates for the block editor (Gutenberg) and the block API.
+There have been theming improvements of interest to theme developers and designers.
+
+For developers, the Options API has been improved again, allowing more flexibility in fine-tuning your application performance.
+WordPress 6.6 also drops support for PHP7.0 and 7.1 but given Altis doesn't support PHP 7 at all, this will not affect your
+Altis sites. A number of new filter and action hooks have been added and improvements to modernise the code and apply coding
+standards have been made.
+
+See the
+[WordPress 6.6 Field Guide](https://make.wordpress.org/core/2024/06/25/wordpress-6-6-field-guide/) for more information.
+
 WordPress 6.6 brings lots of new features, bug fixes, and improvements across the board. In particular, there are improvements
 in performance and accessibility, and new features and updates for the block editor (Gutenberg) and the block API.
 There have been theming improvements of interest to theme developers and designers.