The HAPI Program is still active and we've got some awesome stuff to introduce over the next few weeks. Regarding the year-and-a-half of silence on SourceForge, the "long story short" is that Mark (xtec) and I spent that time discussing, designing and substantially refining the platform. We believe that it is now at a level of maturity where it can be productively evolved by a larger group.
As the components of the platform emerge, we will have a growing need for testers, implementors, developers, technical writers, evangelists and critics. If you are in a position to lend a hand in any of these areas, please do!