Magento 2.1.x Notice: Magento 2.1.18 is the final 2.1.x release. After June 2019, Magento 2.1.x will no longer receive security patches, quality fixes, or documentation updates. To maintain your site's performance, security, and PCIPayment Card Industry: Refers to debit and credit cards and their associated businesses. compliance, upgrade to the latest version of Magento. The Magento User Guide 2.1.x remains available in PDF for Open Source and Commerce.
Release notes provide a detailed description of each product release, with links to additional technical information, installation instructions, and support resources. For details about the most current and past releases, see Release Information.
As a best practice, we recommend that you keep your Magento 2.x installation up to date, so you can benefit from the latest features and advancements.