Today on Sept 14th 2005, Paul Flessner announced that the SQL Server 2005 Sept CTP has been made publicly available at msdn.microsoft.com.  However, database mirroring,  a new HA feature, will be pulled from the initial release planned for Nov 7th 2005 due to early customer feedback. The announcement went on to state the database mirroring will be made available in mid 2006.