This book just came out this week and I just ordered my copy!

Microsoft Exchange Server 2013: Design, Deploy and Deliver an Enterprise Messaging Solution
http://www.amazon.com/Microsoft-Exchange-Server-2013-Enterprise/dp/1118541901

Authors:
– Nathan Winter – AD, Exchange, & Lync Consutlant | Blog | Amazon Profile | @nathanwinters
– Neil Johnson – Microsoft Exchange Team | Blog | @jonnokid
– Nicolas Blank – Exchange MVP & Consutlant | Blog | Website | @nicolasblank

While this might not be the 1st book that came out for Exchange 2013 it is one based on the release version. Many books that come out on technology right when that technology is released must be based on the alpha or beta versions and therefore likely has many things in it that are incorrect. This is due the fact that once the writers are done with the book it can take 3-6 months for the book to be release. So to ship at the same time requires they write based on the beta version of the product.

So it’s best to wait at least six months before buying a book on any major software release, also a good policy to follow when installing\upgrading it!