Hello out there!
What a transition it has been since Microsoft purchased Groove way back in March of 2005. I'll bet you can count the number of communication updates regarding your Groove product on one hand.
First of all, I would like to stress that TeamDirection will be supporting TeamDirection tools within Groove Project Edition until June of 2009. I know there are many companies of all sizes currently (happily) using this product. It's one of those software releases that just works. So if you're not in a hurry to upgrade to Groove 2007, I understand.
TeamDirection will make it as easy as possible to continue running your feature-rich Groove 3.x software for a couple years to come. We will also make it as easy as possible when you're ready to move to the Microsoft Office edition of Groove.
One thing you should be aware of, however, is TeamDirection has no plans for adding any more features into the Groove Project Edition set. We are very excited about our product mix going forward, of which Groove is a major part. In addition to Groove, we've been able to bring our years of collaborative experience to other platforms as well.
We've added support for SharePoint 2003 and 2007, and a new creation-- our Internet Workgroup, which incorporates Amazon S3 services to make sharing projects ridiculously easy. Groove 3.x was a great market, but now events have pushed everyone into the even larger Microsoft Office ecosystem.
It will be interesting to see what life is like for the Groove customer base once its multiplied by a few factors.