WordPress 5.3 has been released! Along with new features, refinements, and accessibility improvements in the editor, this release introduces the new Twenty Twenty default theme, Health Check improvements, verification for admin email changes, PHP 7.4 compatibility, and 387 bug fixes. For specifics, check out the changelog.
645 volunteers contributed to this release, lead by Matt Mullenweg, Francesca Marano, and David Baumwald. At the time of writing this, WordPress 5.3 has been out for about 1 hour, and has already been downloaded 290,235 times!
All users can safely update from Dashboard -> Updates or download and update manually, though you should probably backup first just in case, unless you’re already using VaultPress, which you really should be.