The latest edition of the BizTalk Hotrod magazine was just released.
They are currently going through a membership update and if you did not get an e-mail letting you know the latest version was released then subscribe by sending an e-mail to the editor.
You can download the latest edition at http://biztalkhotrod.com/Documents/BizTalk%20HotRod%20Magazine%20Q1%202009.pdf
Be sure to check out my article titled: Application Servers: BizTalk vs. Dublin