The PHP.net site posted the announcement about the release of the latest version in the PHP 7.1.x series: PHP 7.1.7:

The PHP development team announces the immediate availability of PHP 7.1.7. This is a security release with several bug fixes included. All PHP 7.1 users are encouraged to upgrade to this version.

Bugs fixed in this version include issues in the language core, Date handling, image functionality (GD) and opcache handling. You can view the full changelist here and grab the latest downloads either from the main downloads page (source) or from windows.php.net (binaries).