Yet another nice source of information on Microsoft Dynamics AX 2012 http://blogs.msdn.com/b/axsupport/archive/2011/09/20/content-news-september.aspx Margo Crandall posted on the AX Support blog a list of new Sep. 2011 documents only on the TechNet and MSDN sites.

Here the synopsis with links to the article.

Audience

Approximate number of topics published

Topics Published on both MSDN and TechNet
(Models, Reporting, and Services)

30

Application User Topics

150

Developer Topics

140

Topics Published on both MSDN and TechNet
(Models, Reporting, and Services)

50

Report Catalog topics

200

License and Configuration Key Reference

200

White papers

3

Enjoy