A new patch, MDVA-449, enables merchants using Community Edition 2.0.7 and PHP 5.5.x to upgrade to future releases. It corrects a line of code in the Setup application that is packaged with Community Edition 2.0.7 that is not compatible with PHP 5.5.x. Merchants using Community Edition 2.0.7 with PHP 5.6.x and 7.0.x DO NOT need this patch. Learn more at http://devdocs.magento.com/guides/v2.0/release-notes/tech_bull_207-upgrade.html 