Recently, I got an invitation for the Beta Exam 71-445: TS: Microsoft SQL Server 2005 Business Intelligence - Implementation and Maintenance
You can find the preparation guide at Microsoft site http://www.microsoft.com/learning/exams/70-445.mspx
The exam covers Analysis Services, Integration Services and the Reporting Services for SQL Server 2005.
Although I had the chance to work on the three of the BI components of SQL Server 2005, I find it difficult to pass the exam.
SQL Server 2008, Business Intelligence Development and Maintenance Certification Practice Exam
I had migrated the OLAP applications for SQL Server 2000 to Analysis Services 2005. But later building the application as a new Analysis Services Project seemed to be a better solution. Reporting Services is also a common component. Integration Services SSIS is new if we do not consider the DTS in SQL 2000