iPhone Needs iTunes Store Registration

Users who asked to be informed about the release schedule of the iPhone, have received an email providing additional information regarding the device and the steps and procedures to follow in order to speed up its setting up. Future Owners are asked to register to the iTunes Store to create an account which will be needed later on to configure the iPhone.
We currently can think of 3 options requiring such registration to the iTunes Store:
- unlike the iPods, the iPhone will check the iTS when playing DRM-loaded AAC tracks
- one will be able to buy music tracks directly with the phone from the iTS via Wi-Fi or carrier network
- one will be able to retrieve recorded messages on the mail box as a audio files loaded on the iTS account.
We like the last hypothesis, but there might be other valid ones we did not think about.
Hereafter is part of the email: available from iPhone website .

iTunes Account
To set up your iPhone, you'll need an account with Apple's iTunes Store. If you already have an iTunes account, make sure you know your account name and password. If you don't have an account, you should set one up now to save time later. To set up an account, launch iTunes, select the iTunes Store, and click the Sign In button in the upper right corner of iTunes. Sign in and you're ready to go.