The Supported Platform Matrix outlines the supported client-side and server-side information, including supported operating systems, browser, third party plugins, Serena product integrations, character sets, and upgrade paths.
The attached documents used to be available on the Serena Support site. They include additional information to that held in Excel form of the Support Platform spreadsheets that continue to be on Supportline . From 11.3 onwards there is a new tab in the Excel Spreadsheet which covers the additional information.
When more than 80 characters are entered for the Description field in Composer for the Application at the very top of the tree an error will be thrown when navigating to that table within the system administrator. After clicking OK a few times you can get into the table but you aren't able to switch tabs.
The Product Lifecycle page lists each product release, its status and the end of support date. Start at the Product Lifecycle page. Search for you product in the dropdown list.