A few days ago Microsoft has launched the new exam number 70-556 for Microsoft Office PerformancePoint Server 2007 named "70-556 TS: Microsoft Office PerformancePoint Server 2007, Applications".
It is the first final Microsoft’s exam about PPS functionality (after the beta release 71-556 which was available late 2007).
The main part of this exam covers Planning Server functions (building and managing budget models, security issues, creating planning applications, etc.) You can also find some topics about M&A part of PerformancePoint Server.
Complete list of technical subjects covered by this exam and more details about this exam you will find under the following link:
I wish good luck if you go for it. 😉