That's a strange way to judge a project. Not all projects release every barely tested trivial change to the wild immediately, but if you want that you can download the "nightly builds" and you only have to look at the SVN log to see that it is actively developed.
If you want a productivity tool, you don't really want it changing underneath your work every day - you need stability.
Note the yy.mm version numbering scheme.
Long release cycles are the norm for this project and not indicative of lack of development, but rather of stability and the introduction of significant improvements with each release.