I noticed that Amit's book came out in June 2006. Now that it's almost 2 years later and 10.5 has come out, etc. would those of you who are familiar with this book still say it's $65 relevant? The book is exactly what I am looking for (as far as I can tell), and for the most part it seems like the technologies and concepts it covers shouldn't have changed with 10.5, etc. Is this true? Should I go ahead and spend the money? I haven't noticed anything on his blog about a v2 (though I could have just missed it). Thanks!