BizTalk RFID book has finally hit the market. This is a very well written book with all the details you need to know to write good RFID applications on top of BizTalk RFID platform. Actually it is written by 3 folks who really know the product really well. Venkatesh was Architect of BizTalk RFID and is CEO of S3Edge. Mark Simms is Field Program Manager for BizTalk RFID.
I highly recommend the book to anyone who is interested in building RFID applications.