Microsoft recently announced the introduction of new features for Zune Music in advance of the launch of Xbox Music later this year. Zune users will not be able to use some social features in Zune by this Friday, including the ability to send and receive messages, invite friends, and share songs, albums, and playlists. Microsoft assured that the changes will not affect users ability to stream or download music or music purchased from Zune Marketplace.

-Check out, what you are going to lose by this Friday.