Scott asks, "Any news to what VP7 might include besides G5 support?"
Microsoft has not released full details about the upcoming 7th version of Virtual PC. However, besides the G5 compatibility, it reportedly will also feature increase overall speed compared to Virtual PC 6, as well as improved usability.
One rumour site claims that VPC7 will also include full native 3D graphic card support, but I will be very surprised if this turns out to be true. We'll see in a few months, but I definitely wouldn't count on it.