On the main PHP.net site they've announced the first stable release in the PHP 7.3.x series: PHP 7.3.0!

The PHP development team announces the immediate availability of PHP 7.3.0. This release marks the third feature update to the PHP 7 series.

PHP 7.3.0 comes with numerous improvements and new features such as:

• Flexible Heredoc and Nowdoc Syntax
• PCRE2 Migration
• Multiple MBString Improvements
• LDAP Controls Support
• Improved FPM Logging
• Windows File Deletion Improvements
• Several Deprecations

You can find out more information about these features and view the Changelog for this release from the announcement. As always, you can download this latest release from either the main downloads page or windows.php.net for the Windows binaries. If you need more information on moving to this new release, check out the migration guide.