Distributed Applications Training Kit now available

Although the publication date was slipped slightly (and there was conflicting information coming from some of the vendors), the training kit for the Distributed Applications PRO certification (70-549) is now available. Of the three training kits I was involved in, this is the one where I thought the material would be most useful beyond studying to pass the certification test. The concepts and issues associated with distributed applications are commonplace and the book provides a nice consolidation of the latest thoughts on how to address the problems. I am curious about how people find the book, so if you have any feedback, I would love to hear it.