[Insert White Wolf Standard Cross Referencing Complaints]
There are really 2 parts of this book - the part that is the new toys for characters (disciplines, clans, bloodlines, merits, flaws, paths, etc) and the part that details the Sect.
The new toys are....new. There is some interesting things here, but it is for the most part, just more stuff. It works, and does what you would expect.
The detailing of the sect itself is well written and puts a face on the sect that previous editions of Vampire lacked. It adds some depth, and turns the Sabbat into something playable.