It's not just the hardware reporting, it is also the software as well:
http://news.cnet.com/8301-13506_3-20019356-17.html
"Starting this week, with its September release, NPD's free monthly gaming reports will no longer include the following:
- Hardware unit sales
- Software unit sales
- Individual versions of a title in its bestselling-games list
Instead, the reports will list the top-selling games of the month by title, with all versions of the game included in a single listing. The new reports will also include a statement saying the retail information it collected for the month do not include digital purchases, rentals, and other figures outside of physical sales."
"In any case, you can expect NPD-based reporting on gaming sales to slim down. Even news-publishing clients who have access to the full data upon initial release, Riley said, "are not permitted to use this information for journalism."
