The first alpha testing build has been released! The source code has been bundled in the three most common formats (gzip, bzip2, and regular old zip). A Windows binary installer has also been provided. You may find all the files here.
For the brave at heart you can checkout the current svn version at https://cryptopossum.svn.sourceforge.net/svnroot/cryptopossum/. We also have daily snapshots of the SVN repo available for download here.
If you are interested in helping with cryptopossum in any way, you can contact us through the mailing lists at firstname.lastname@example.org.