Magento Community Edition 2.0.10 and 2.1.2 resolve multiple security issues, including critical vulnerabilities with certain payment methods and Zend Framework libraries. The releases also make several functional improvements and API enhancements. Learn more about the security issues in the Magento Security Center at https://magento.com/security/patches/magento-2010-and-212-security-update and functional updates at http://devdocs.magento.com/guides/v2.1/release-notes/bk-release-notes.html.