In the 31 October 2008 release of SQL Server 2008 Books Online, the following topics have either been added or updated.
How to: Configure a Multi-Homed Computer for SQL Server Access
How to: Install SQL Server 2008 from the Command Prompt
How to: Install SQL Server 2008 Using a Configuration File
How to: View Migrated DTS Packages
Breaking Changes to Database Engine Features in SQL Server 2008
Creating a Report Server Database
Getting Started with SQL Server 2008 Failover Clustering
How to: Upgrade a SQL Server Failover Cluster Instance (Setup)
Using SQL Server Books Online
Using the SQL Server PowerShell Provider
When IntelliSense Is Unavailable