InformationParallels Plesk Panel version information can be found in the Plesk Control Panel on the Component Management page.
In Parallels Plesk Panel 10.x, the version and build information can be found on the System Statistics page (Home -> Tools & Utilities -> Server information).
You can also log into the server and read the version information located in the file "version."
Parallels Plesk Panel for Linux
Version information can be found in the file "$PRODUCT_ROOT_D/version."
# cat /usr/local/psa/version
9.5.2 CentOS 5 95100504.10
Output shows the Parallels Plesk Panel version, operating system, and build number. In this example, the version is 9.5.2. The operating system is Centos 5, and the build number is 95100504.10.
Parallels Plesk Panel for Windows
Version information is located in the file "%pkesk_bin%\version." Open this file with any text viewer.
> type "%plesk_dir%\version"
9.5.2 Windows 2003/2008 20100505.14
In this example, the version is 9.5.2. The operating system is Windows and the build number is 20100505.14.