According to the MAP team Blog the latest version of Microsoft Assessment and Planning Toolkit has been developed and is available for Private testing on MS Connect.The Public Beta would be available in early June

Here is what the team blog reads

The Microsoft Assessment and Planning (MAP) Toolkit is an integrated platform with tools and guidance that make it easier for you to assess your current IT infrastructure and determine the right Microsoft technologies for your IT needs. It offers quick inventory, powerful assessment and actionable recommendations for many major Microsoft products so you can save time and cost to plan your deployment projects:

1. Windows 7 (NEW!)
2. Windows Server 2008 R2 (NEW!)
3. Hyper-V for Windows Server 2008 R2 (NEW!)
4. Windows Vista
5. Windows Server 2008
6. Hyper-V for Windows Server 2008
7. SQL Server 2008
8. 2007 Microsoft Office
9. Microsoft Application Virtualization
10. Microsoft Online Services (e.g. Exchange Online)
11. Forefront Client Security and more

Join the Beta Now!

• Click here to join the Microsoft Assessment and Planning (MAP) Toolkit 4.0 Beta Program
  
• Download the latest MAP 4.0 sneak-peak overview PowerPoint deck
• Coming soon:  MAP 4.0 Toolkit is current in private beta.  Public beta will be released in early June 
• Learn more about the Microsoft Assessment and Planning (MAP) Toolkit on TechNet (get MAP 3.2 released bits here!