Microsoft has released two new Cumulative Updates for SQL Server 2008 R2. The first one is SQL Server 2008 R2 RTM Cumulative Update 14, which is Build 10.50.1817.0. This CU has seven fixes in the public fix list, and it is likely to be one of the last cumulative updates for the RTM branch of SQL Server 2008 R2, since SQL Server 2008 R2 Service Pack 2 is likely to be released pretty soon. When that happens, the RTM branch will be retired, meaning that it will be an “unsupported service pack”. You really should be planning to get off of the RTM code branch as soon as possible.
The second Cumulative Update is SQL Server 2008 R2 SP1 Cumulative Update 7, which is Build 10.50.2817.0. There are 24 fixes in the public fix for this CU. As always, I want to point out that these cumulative updates are only for SQL Server 2008 R2, not for SQL Server 2008. They are, as the name implies, cumulative updates, which means you do not have to install the previous cumulative updates on the RTM or SP1 code branch.