I haven't read the entire book yet, but my initial impressions are that it is an excellent beginning book for Visual Studio 2008. It also touches on some topics not immediately related to Visual Studio, such as modern programming practices, which I found valuable as a junior programmer.
If you are a veteran Visual Studio user, this book is probably too basic for you.
Most of the chapters are overviews, rather than in-depth coverage of any one topic. However, the content is very practical and concise, and contains a lot more useful information per chapter than some more poorly written books would.
The new book is missing a few chapters that were in the 2005 edition - one on SQL Server Reporting Services and another one on Using Enterprise Library.
The omission of Reporting Services is unfortunate, since that is a popular alternative to Crystal Reports. (The 2008 edition still has the Crystal Reports chapter that the 2005 book had.) However, if you are going to use Reporting Services you'll probably get a separate book for that anyway. And perhaps the RS chapter was left out of this 2008 book in anticipation of SQL Server 2008 (scheduled for release later in 2008).
All in all, this is an excellent overview and introduction to Visual Studio 2008. If you have a little .NET programming experience and want to learn more about the basics of Visual Studio development, this book is for you.