As per this post to the ThinkPHP Blog, the latest version of PHPProjekt (5.2) has been made available.

Mayflower announces that Version 5.2 of its free popular open source groupware suite "PHProjekt" is available immediately and ready for download.

Updates in the new version include a refactored user interface, Dojo integration, porting it over to the IBM DB2 database system, an update to the Helpdesk, and automatic email functionality.

Get full information on the PHPProjekt from www.phpprojekt.com.