First, Apple released a new version of iTunes - 10.5 - and now it opened the doors of the iCloud site, where customers will be able to sign up for the service that seamlessly backs up your data to the cloud.
To be able to start using iCloud, you need the latest version of Mac OS X Lion or iOS 5, neither of which has officially been released yet.
It's a bit of a catch-22 situation: If you try to sign into the iCloud site (you need your Apple ID and password), you'll be greeted with the following message: "To set up iCloud, go to iOS 5 Settings or OS X Lion System Preferences." And most users can't do that since they can't install the latest versions of iOS and Lion just yet.
Still, now you at least know where to go when that iOS 5 update starts rolling out to users.