The PHP.net site has posted an announcement about the latest release in the PHP 7.1.x series - PHP 7.1.3:
The PHP development team announces the immediate availability of PHP 7.1.3. Several bugs have been fixed. All PHP 7.1 users are encouraged to upgrade to this version.
Bugs fixed in this version include changes in core code, Apache support, GD image handling, OpenSSL changes and correcting bugs in the standard libraries. As always you can download this latest release either from the main PHP.net site (source) or from windows.php.net (Windows binaries).