Good things first: Using the KDE Partition Manager version from svn is safe.
There hasn't been any substantial development work being done on KDE Partition Manager for quite some time. This is indeed very deplorable and mostly owed to the fact that I am so far the only developer working on the project. The time I was able to devote to open source work has been severely limited over the last couple of months due to, as they say, circumstances beyond my control.
So the project has remained in a rather dormant state since my series of blog entries about the upcoming featurs in version 1.1 and the post about the new partition widget design that had been so magnificiently done by Hugo.
As an aside, this design has again been improved quite a bit after that post, so here's a current KDE Partition Manager screenshot (also, everyone likes screenshots):