I already have the wrox Professional Asp.net MVC 2 book. I know the razor view engine is new to 3. Is there any new information or advantage to getting this one too?

We rewrote all the chapters, used a different sample application, and updated the book with material on the new Razor view engine, the new unobtrusive client validation features, scaffolding, NuGet, and advanced topics on model binding, templates, security, and dependency resolution.

I'd say it's a very different and better book compared to the previous version, but I'm biased.

Check out the table of contents and you should see some obvious differences: http://media.wiley.com/product_data/...18076583-7.pdf

As OdeToCode said, it's a full rewrite. See the table of contents here: http://media.wiley.com/product_data/excerpt/83/11180765/1118076583-7.pdf