BizTalk Server 2006 R2 final RTM version has been launched!  This includes BizTalk RFID and I will be blogging more about the various features of RFID, particularly related to device management and RFID Manager.

http://www.microsoft.com/biztalk/technologies/rfid/default.mspx has more details. You can download an evaluation version from: http://www.microsoft.com/biztalk/default.mspx