Our developers are currently working on updating Undelete 2009 to support Windows 7 and Windows Server 2008r2. We expect the update to be available in early-to-mid December 2009. If no major changes are required, it should release in the early part of that month. If we discover a need to make more significant changes to Undelete, we'll run a field test, and release sometime later that month.
I run Server 2008r2 as my main production system and have been running early versions of Undelete for several months - without experiencing any major issues. So, I'm optimistic we'll get this update out soon.