So it has been theorized that BillG announced a "SoftSled" at WinHEC. That is not the case. What he said was that the functionality to remote Media Center onto an Xbox 360 will be available in other CE devices like TVs. This is the Pika project that allows CE partners (e.g. people who make hardware) to add MCX to their deviecs (there is an MCX session later this week on how to do this). There are no plans to make a software-based MCX.