Today Microsoft released SP3 for SQL Server 2008R2 and SP4 for SQL Server 2008. If you’re running either of these platforms, you might want to go out and grab the installers to keep your environment. As these products are both now in extended support, there will be no more CU’s released for either of these products. However, both of these versions have some important security updates. Details around SP4 for 2008 are available here and details for SP3/2008R2 are here.