The service allows users to download or stream as much music as they like for a monthly fee or annual payment. The pricing in Britain has two options, either monthly or yearly. The monthly subscription will cost £8.99 and the twelve month subscription will run £89.90.
In the US, there are a couple trial period options listed, along with monthly or annual subscription options. The monthly Music Pass will cost $9.99, and the yearly option, $99.90.
We expect that there may be some additional features announced during the Windows 8 introduction in October. There is also some talk that a unified music and video option may be made available as well.
sources: LiveSino.net and TheVerge via WMPoweruser (1 and 2)