Today Microsoft Released Service Pack 1 for SQL Server 2008
Some of the changes include:
SQL Server 2008 SP1 has in total 300 fixes included, with the majority being minor tweaks. If you compare this to the SQL Server 2005 SP1, which contained 2’500 fixes, you really see that SQL Server 2008 is a very stable release.
You can download the Service Pack from here. The build number is 10.00.2531
The Knowledge Base Article can be viewed here.