With all the new products which we're seeing this year, the question does bubble up "How does this impact certification ?" .
The people who run the MC* programmes have put together a set of web casts. These have already happened (click to see more and watch the web cast)
2007 Office System Certifications for IT Professionals and Developers
Windows Server Certifications Overview
Exchange Server 2007 Certifications
SQL Server 2005 Certifications
Update on Windows Vista Certifications
Some are still to come - click the time for more information and registration.
Protecting the Integrity of Microsoft Certification
May 23, 2007 7:30 A.M. Pacific Time (That's 3:30 PM UK / 4:30 PM C.E.T) or 5:00 P.M. Pacific Time
Review of Windows Vista and Exchange Server 2007 Training and Certification
May 30, 2007 7:30 A.M. Pacific Time (3:30 PM UK / 4:30 PM C.E.T) or 5:00 P.M. Pacific Time
Introducing the Windows Server “Longhorn” Certification Roadmap *
June 13, 2007 7:30 A.M. Pacific Time (3:30 PM UK / 4:30 PM C.E.T) or 5:00 P.M. Pacific Time
1 Year In: The Microsoft Certified Architect Program
June 20, 2007 7:30 A.M. (3:30 PM UK / 4:30 PM C.E.T) Pacific Time or 5:00 P.M. Pacific Time
Now, you'll notice that we're not introducing the Longhorn certification roadmap until June; read from into that "We don't know what the upgrade process will be - yet". However if you go to the MCP PAGE you can register for 40% off the Exam(s) whatever the upgrade turns out to be. You have to be an MCSE or MCSA by the 30th of June to qualify. This is where future webcasts will be announced too.