Nokia is on an updating spree people!!
Bringing updates to Nokia Maps, Nokia Drive, introducing new apps like Nokia Transport, Nokia's Creative Studio App.
the latest is Nokia Music, which just got updated to v2.0. I can't confirm any changes (due to the fact that I don't have a Lumia phone which is also due to the fact that I am waiting for the Lumia 900)... It seems to be mainly "under-the-hood" changes that have been done to it, as most blogs are reporting no difference in UI or anything like that.
If you own a Lumia 710 or 800 you can go to the Nokia Collection section of the marketplace to download/update this app.