I bought this book at GenCon. My superbrief review of it is: This book is made of raw awesome.
At somewhat greater length: it features an innovative system of magic replacing the system of bunks that I always found burdensome in C:tD. The presentation of changelings as loosely organized into seeming and kith rather than the more rigid kith of C:tD is actually more in line with the desires of at least one of C:tD (2e)'s designers, who was not free to just do whatever he wanted. =)
The distinction between changelings and True Fae serves a rather clever purpose in broadening the range of stories that this setting can tell, as the text specifically points out. The explanation for what changelings are and where they come from is more in keeping with the horror of the WoD than the origin story of C:tD, and with the traditional meaning of "changeling."
I do want to be clear, however, that I am not bashing C:tD, a game in which I find a great deal to enjoy. (And I'm not just saying this to cover my ass in case Ian ever reads this. Honest.) It would not be difficult to update C:tD to nWoD rules (oh my aching head, the alphabet soup of this post!), all in all. The balance between Bedlam and Banality has been renamed Clarity - comparable to Morality, Wisdom, Humanity, etc., of the rest of the nWoD.
Haven