Microsoft has released Community Pack for Microsoft SQL Server 2005 - Community Technology Preview (CTP) March 2006

The Community Pack is a collection of standalone install packages that provide additional value for SQL Server 2005. It includes:
Latest versions of redistributable components for SQL Server 2005
Latest versions of add-on providers for SQL Server 2005
Latest versions of backward compatibility components for SQL Server 2005

These packages have been made available for general testing purposes only. Do not deploy the CTP software in production. Peer-to-peer support is available in the SQL Server 2005 forums.

Community Pack for Microsoft SQL Server 2005 - Community Technology Preview (CTP) March 2006