Directly from the Microsoft Release Service blog, here is the list of latest updates for SQL Server 2008 R2 and 2012 SP1/SP2:
SQL Server 2008 R2 SP3 released
SQL Server 2008 R2 Service pack 3
SQL Server 2012 SP1
Cumulative Update #12 for SQL Server 2012 SP1
SQL Server 2012 SP2
Cumulative Update #2 for SQL Server 2012 SP2
Additionally, the SQL Server 2008 Service Pack 4 has been released.
Stay Tuned! 🙂