This article presents a technical analysis of the TCPA hardware system and the Palladium operating system. Palladium and TCPA have been covered in some depth on slashdot and various FAQA. Unfortunately, much of the information available from these sources is highly subjective and confusing (for example, TCPA and Palladium are presented as if they were the same thing). Reliable and objective technical information on Palladium and TCPA has been hard to come by-and the actions of Microsoft has not made obtaining such information any easier.
An interesting technical overview of how the TCPA/Palladium platform will work. There are some interesting comments on this paper in a thread on Kuro5hin.