There are a number of exciting changes for users and developers alike in WordPress 5.8.
Overall – WordPress 5.8 fixes over 170 bugs and has 96 enhancements.End users will appreciate all the changes in blocks, and block based widgets. Developers get a new way to manage styles and settings by creating a theme.json file for their themes. All users will benefit from the new support of the image WebP format. For further information: https://make.wordpress.org/core/2021/07/03/wordpress-5-8-field-guide/
You can also see a complete list of changes: https://core.trac.wordpress.org/query?status=closed&resolution=fixed&milestone=5.8&order=priority
If you have not done so already – download the update or simply use your existing installation of WordPress to update your site. Either way – this is an excellent time to make a backup copy of your site(s) before upgrading.