I have updated the TechNet Wiki page on the Visual Studio Authoring Extensions with two additional subjects, courtesy of Matthew Long.
The two new subjects are:
- Switch MP Project between 2007 & 2012
- Referencing MPBs and other 2012 MPs
Click this link to check out the updates, http://social.technet.microsoft.com/wiki/contents/articles/16051.system-center-visual-studio-authoring-extensions.aspx#Referencing.