It is a all in one tool for every file system across every platoform. This 1 CD covers Linux, OS X and Windows easily with a GUI that is esay to understand. Even a beginner can shrink, create and format a partition with this tool. So while you may not think it is a big deal. It is for those of use who use it for more than what others might.
Considering this is the most refered to Partitioning utility it does suck that it is leaving.