Check out this great article on MAP v4
This article explains the new features in MAP v4 including instructions on how users can fine tune their hardware assessments for Windows 7 and Windows Server 2008 R2 to their own hardware profiles. Additionally, it provides insight into the new features included in the server virtualization assessment.
http://technet.microsoft.com/en-us/magazine/ee677580.aspx
Is MAP going to be compatible with Office 2010?
Yes, MAP 5.0 provide Office 2010 readiness information.
Check out the preview here.
https://connect.microsoft.com/InvitationUse.aspx?ProgramID=1668&InvitationID=M32B-GBGR-HHFG&SiteID=297