I picked this up the day it came out and I have been super impressed with the frequency of the updates that have been made. The book is very well written and useful. It also covers 1.5, which is great.
Agreed, I've been using Django for a few years now and I've been learning new things from it.
Particularly helpful as I'm starting to transition to Class Based Generic Views in some of my projects.
django is an ecosystem begging for a cookbook of tips and tricks. There is surely something in this that I don't know.