Here’s the release history for Microsoft SQL Server 2008. Each update is linked to its Microsoft knowledge base article with the download and the list of hotfixes included. We don’t list cumulative updates for older versions of SQL Server.[table]Service Pack, Release Date, Build, Support Ends
GDR (Meltdown/Spectre) Download, 2018/01/11, 10.0.6556, 2019/07/09
Security Update – Download, 2015/07/14, , 2019/07/09
SP2, 2010/09/24, 10.00.4000, 2012/10/09 – out of support
SP1, 2009/04/07, 10.00.2531, 2011/10/11- out of support
None (RTM), 2008/11/07, 10.00.1600, 2010/04/13- out of support[/table]
As of 2015/04/19, Microsoft’s KB 957826 says that SP4 will be “the latest and final release for this version. The SQL Server product team will not be releasing any additional cumulative updates to this release.”
Depending on your agreements with Microsoft and where you’re hosting your SQL Server, you may be able to get even longer support than what we show here.