SQL Server 2005 Books Online update - September 2007 on MSDN & Technet
SQL Server version 2005 Books Online aka BOL has been updated by SQL Development Team in September 2007 and not available for download yet. As usual they are awaiting customer feedback from the BOL or via MSDN/Technet pages. Refer in their words:
In the past, our processes for building the Books Online downloads have been faster than the processes for publishing the Web copies in the MSDN and TechNet Libraries. We therefore released the downloads before the Web versions were completed, and published the Web copies as soon as they were available. Because of recent changes in our Web publishing procedures, our time to publish to the Web is now faster than the time to build and test the Books Online download packages.
As of now you can only view the September 2007 Books Online update from MSDN Library or TechNet Library websites.
To update your local version of BOL will be available for download as soon as the package is ready on the Microsoft Download Center and Microsoft Update sites.