Directly from the Microsoft Release Service blog, here is the list of latest updates for SQL Server 2008 R2 and 2012 RTM:
SQL Server 2008 R2
Cumulative Update #8 for SQL Server 2008 R2 SP2
SQL Server 2012 RTM
Cumulative Update #9 for SQL Server 2012 RTM
Stay Tuned! 🙂