Magento 2.0.18 is the final 2.0.x release. After March 2018, Magento 2.0.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.
Release notes provide a detailed description of each product release, with links to additional technical information, installation instructions, and support resources. For information about the most current and past releases, see the Release Notes in the Magento developer documentation.
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 in digital commerce.