http://www.neogaf.com/forum/showpost.php?p=5613120&postcount=169

Originally Posted by sonycowboy

引用:

We don't have anything "official" yet and I'm not sure if NPD has done any official PR release yet.

If you read the article there were two sources:

1) Microsoft - trumpeting the 360 sales
2) CSFB - releasing their research report to investors.

:D