This minor release includes 15 bug fixes in Core and 11 in the Block Editor, addressing issues like unexpected CSS specificity changes in certain themes.

For a full summary of the maintenance updates, you can refer to the Release Candidate announcement.
WordPress 6.6.2 is a short-cycle release. The next major release will be version 6.7 planned for November 12, 2024.
If you have sites that support automatic background updates, the update process will begin automatically.

You can download WordPress 6.6.2 from WordPress.org, or visit your WordPress Dashboard, click “Updates”, and then click “Update Now”.