Directly from the Microsoft Release Service blog, here is the list of latest updates for SQL Server 2008 SP3, 2008 R2 SP2 and 2012 SP1:
SQL Server 2008 SP3
Cumulative Update #16 for SQL Server 2008 SP3
SQL Server 2008 R2 SP2
Cumulative Update #11 for SQL Server 2008 R2 SP2
SQL Server 2012 SP1
Cumulative Update #9 for SQL Server 2012 SP1
Stay Tuned! 🙂