Rumours has it that the Xbox dashboard update is comming December 4. The biggest new, according to the rumours, is that original Xbox games will be available for download. Each game will cost 1200 points. Some games that will be download able are Halo, Fable, Fahrenheit, Crimson Skies: High Road to Revenge, Crash Bandicoot: The Wrath of Cortex and Burnout 3.
The Videomarkedplace for Europe will not be part of this update. (Source: Eurogamer.net)
Remember, this is all rumours.