Microsoft has released Service Pack 2 to SQL Server 2008. More details and the download are available from the following link:
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=8fbfc1de-d25e-4790-88b5-7dda1f1d4e17
Note: New service packs to SQL Server is usually supported with System Center Configuration Manager within 30 days of the release.