http://blogs.technet.com/mapblog/ for all the news and features, in brief the new additions are:

• SQL Server Database Instance Discovery (NEW!)
• Microsoft Online Services Needs Assessment and Survey (NEW!)
•  Forefront Client Security/NAP Readiness Assessment (NEW!)
• Power Savings Calculator (NEW!)
• Virtualization Infrastructure Assessment (e.g. reporting the mapping of hosts by guests) (NEW!)

Map has been used by over 510,000 customers and partners already!

So try it here