Amazon.com has started taking orders for Treo Essentials: Get the Most from Your Treo 650 by Michael Morrison and published by Que.
This is the first book I've seen that has come out with Treo 650-specific advice. Previous books like Now You Know Treo and to a lesser extent the Treo Fan Book were written for the Treo 600 with selected updates for new features of the Treo 650.
I'm hoping to get a copy of Treo Essentials soon to see how many useful tips it has about productive use of the Treo 650. [ via Palm Addict ]