WordPress 5.2 focuses on tools to performance and site security.
WordPress 5.2 adds in a few helpful tools for site administrators to easily debug any configuration errors by going to Admin > Tools > Site Health.
There are also a number of other updates for developers, new Dashboard icons, and accessibility changes that make this a great update for WordPress users.
You can read more by looking at the release notes: https://codex.wordpress.org/Version_5.2
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.