Medals Coming to the Xbox Experience
The MyXbox section will give you a central location to edit personal items. From here you'll be able to add pictures, edit your profile, and view your achievements. Microsoft will also institute a new medal system so you can show off your most recent achievements. Medals are basically graphical representations of achievements, kind of like graphical badges or trophies.
Read a description of the entire Xbox Experience, including that quote, here.
Now, how much do you want to bet that they will roll this out before Sony does their trophy system.