I can’t say, but you could always consider contacting them by sending them a request directly (follow the link). Of course they’ll most likely also spot your current message.
In the mean time I have started to experiment with plugins which you can use to provide extra features to the software. And there are some very good Subversion libraries for Java out there, so far so good. However, this is only in the planning / experimental stages so far.
But… if your main concern is revision control and you don’t share your work with others then it is possible to create a local vpository setup which you can then use to keep track of your work. This is provided free of charge with every VP edition (I easily got this to work with the Modeler license for example).
Of course if you have different needs (team based, remote repository, etc.) then this will probably not be sufficient.
Even so, I hope it could give you some ideas.