Overview of the SAS Maintenance Releases

To optimize performance and support, SAS encourages you to install the SAS 9.2 maintenance releases. Maintenance releases are cumulative. For example, the third maintenance release contains all of the new features and enhancements from the first, second, and third maintenance releases. If you choose not to install a maintenance release, then you will automatically receive all of the content in that maintenance release when you next upgrade your version of SAS.
In general, any hot fixes that were released since SAS 9.2 (TS2M0) are included in each maintenance release. However, a hot fix for your product might be released after the third maintenance release for SAS 9.2. To verify that you have the latest hot fixes for the products at your site, see Technical Support Hot Fixes at http://ftp.sas.com/techsup/download/hotfix/hotfix.html.
Note: Before you apply any hot fixes, generate a deployment registry report to determine what release of each SAS product you currently have installed at your site. For more information about how to generate this report, see SAS Note 35968 at http://support.sas.com/kb/35/968.html.