cPanel & WHM software version 11.36 will reach End of Life in January 2014.
In accordance with our EOL policy [http://docs.cpanel.net/twiki/bin/view/AllDocumentation/InstallationGuide/LongTermSupport],11.36 will continue functioning on servers after reaching EOL. However, no further updates, such as security fixes and installations, will be provided for 11.36 once it reaches its EOL date.
We recommend that all customers start planning to migrate any existing installations of cPanel & WHM version 11.36 to a newer version (either 11.38 or 11.40).
If your server setup complicates the process of migrating to a newer version of cPanel & WHM (for example, an out-of-date operating system), then cPanel is here to help. Simply open a support ticket at https://tickets.cpanel.net/submit so that our knowledgable support team can provide recommendations, migration assistance, and more.
About cPanel, Inc.
Since 1997, cPanel, Inc. has been a leading innovator and developer of control panel software for the web hosting industry. cPanel builds software that allows web host professionals to transform standalone servers into fully automated, point-and-click web hosting platforms. cPanel-licensed software allows server and website owners, along with resellers and developers, to optimize their technical resources and replace tedious shell-oriented tasks with dynamic, intuitive web-based interfaces.