Microsoft has released a Product Guide for SQL Server Denali CTP3, which has datasheets, white papers, technical presentations, demonstrations, and links to videos that will help you evaluate Microsoft SQL Server Denali. You can get to Books Online for SQL Server Denali CTP3 here. There is also a Feature Pack for SQL Server Denali CTP3 that was released in early July.
SQL Server Denali is coming (perhaps sooner than you think), and I think it is a very good idea to pay attention to what new features will be available that will help you solve some of the daily challenges you face as a DBA. For example, in Denali, clustered indexes on tables that have varchar(max), nvarchar(max), and varbinary(max) columns can now be rebuilt as an online operation. This is a very important availability feature! You can read about some of the other Availability enhancements that are a part of SQL Server AlwaysOn here.
Glenn Berry's SQL Server Performance 