Windows 7 phone market place vs xbox market place?

Question

When making games for windows 7 phone will there be separate places for XNA based games and silverlight games? I'm curious how this will work.

Are all XNA based games going to work out of box? How would someone differentiate an app developed specifically for phone vs just a port?

Also would this be $200 per year to have a game hosted on both Windows 7 phone and XBOX live market place?

Answer 1

Considering none of these details are released yet, it would be best to ask Microsoft.