As stated in the Adobe Support Lifecycle Policy, Adobe provides five years of product support, starting from the general availability date of Adobe Reader and Adobe Acrobat. In line with this policy, support for Adobe Reader 9.x and Adobe Acrobat 9.x ended on June 26 2013.
Note: Adobe supports only the most recent major version of Adobe Reader for Linux, which is version 9.x.
End of Support means that Adobe no longer provides technical support or distribute runtimes. This policy affects product and security updates for all derivatives of a product or product version (localized versions, minor upgrades, operating systems, dot and double-dot releases, and connector products).
For more information on the Adobe Support Lifecycle Policy, visit http://www.adobe.com/support/products/enterprise/eol.
For a complete list of Adobe products and technical support periods covered under the policy, visit http://www.adobe.com/support/products/enterprise/eol/eol_matrix.html.