While the world is counting down to a Windows Phone 8 event on the 29th October, Microsoft has officially launched an app to sync with Windows Phone 8 devices. It is similar to the current Zune software on other Windows OSes.
This app can be downloaded from the Windows Store from both Windows 8 and Windows RT. You will be able to copy music, photos, and other media to and from each device and etc with this app. According to the Verge, it will NOT be able to work with handsets that is having the Windows Phone 7 OS.