Microsoft SQL Server 2005 SP3 was made available on the Microsoft Download Center. You can grab your copy at the Link Below:
The Release Notes:
Service Pack 3 for Microsoft SQL Server 2005 is now available. SQL Server 2005 service packs are cumulative, and this service pack upgrades all service levels of SQL Server 2005 to SP3. You can use these packages to upgrade any of the following SQL Server 2005 editions:
- Enterprise Evaluation
Note: To upgrade SQL Server 2005 Express Edition, obtain the SP3 version of Express Edition or Express Edition with Advanced Services.
For a list of new features and improvements that are included in SQL Server 2005 SP3, review the What’s New document.
For the full list of Updates and Fixes, take a look at KB955706.