WROX has just published one of the first (if not the first) ASP.NET 2.0 books -- it is a solid one, Professional ASP.NET 2.0 and I reccommend to anyone who is serious about working with VS 2005 and ASP.NET 2.0 -- Bill Evjen, Scott Hanselman, Farhan Muhammad, Devin Rader, Srinivasa Sivakumar all did a fantastic job putting together a great read with easy to understand examples and high-quality guidance. This is a must-have for every ASP.NET developers bookshelf (I already have 2 on mine :))
You can buy it on amazon today: http://www.amazon.com/gp/product/0764576100/103-6750097-5341440?v=glance&n=283155&n=5&s=books&v=glance
Also - -if you are just getting started with ASP.NET 2.0, the Beginning ASP.NET 2.0 book by another all-star crew (Chris Hart, John Kauffman, David Sussman, Chris Ullman) is also available from Amazon and is a great way to get your feet wet.
My hats off to the authors of these great books -- keep em coming!