Saw it mentioned in the recent MSPress newsletter, Peter DeBetta is writing Introducing SQL Server 2008 and right now Chapter 1 on the Declaritive Management Framework (essentially Group Policy for SQL Server) is a free download. If you sign up you'll get the entire e-book when it's completed. Can't beat free!
I'm Andy Warren, currently a SQL Server trainer with End to End Training. Over the past few years I've been a developer, DBA, and IT Director. I was one of the original founders of SQLServerCentral.com and helped grow that community from zero to about 300k members before deciding to move on to other ventures.