Gonna bookmark your post for future reference. Ideally, I'll put out RC 5 this week, and if it stands on its own two feet for a week, I'll put up the 1.0 release. After that, we'll be diving into the D6 update. Some of the work has already been done, but there's a lot left to do. I'll probably create a group for it at http://support.ubercart.org when the time comes so we can coordinate the activity.