Hey San,
Happy new year-
As a SL DM, I picked it up with expectations of it being valuable if & when I get to run some sessions based in Termana, and I was pretty much correct, as a good portion of the beasties presented are supposedly found there. Along that theme, there are many new "animal" types. CC3 has lots of outsiders too ( Daemons, Demons & Devils - Belsameth's Watchman looks very cool ), and 23 pages of new Golem types ( **yawn*** ) Also some more support for the Carniaval Krewe, and a handful of new templates.
The art is hit or miss, like the first two books.
All in all, a pretty good book, but nothing really jumped out at me in a "use me next" kind of way. Filed it away after a few nights on the nightstand and I haven't pulled it out since then about a month ago. Hopefully I get some use out of it if & when we get to Termana, but right now Ghelspad is keeping us pretty busy.
-BFG