A new cumulative hotfix has been released and contains quite a few important fixes. Read more about this build here http://support.microsoft.com/kb/935356.
Read more about the new certification here http://www.microsoft.com/learning/mcp/architect/database/default.mspx
If you haven't heard, we have just published some information about the next release of SQL Server codenamed Katmai - you can read more here http://www.microsoft.com/sql/prodinfo/futureversion/default.mspx. I will post more details as soon as I get a spare half hour.