Microsoft have just released the reference spreadsheet that outline all the new and removed Group Policy settings. The spreadsheet also has a Non-Versioned section that shows all the is setting that write directly to the registry (a.k.a. Non-Managed). This is a really good sign that Microsoft Office 2010 is very close to RTM.
You can download the spreadsheet for your self here http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=f2316c00-447c-49b7-810b-68fef63cfb12
Source Aaron Parker