This security and maintenance release features 2 bug fixes in addition to 1 security fix. Because this is a security release, it is recommended that you update your sites immediately. All versions since WordPress 5.2 have also been updated.
WordPress 5.8.2 is a small focus security and maintenance release. The next major release will be version 5.9.
You can download WordPress 5.8.2 by downloading from WordPress.org, or visit your Dashboard → Updates and click Update Now. If you have sites that support automatic background updates, they’ve already started the update process.