Magento Commerce, 2.0.11

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.

USPS

The United States Postal Service is the independent postal service of United States government, offering domestic and international shipping services by land and air.

On January 17, 2016, USPS made changes to their services, rates, and package names. The updates are included in the Magento Enterprise Edition 2.0.1 release.