Kbase Article of the Week: MobileMe: About Moving to iCloud →

Apple Support:

If you have an active MobileMe account when you move to iCloud, you’ll be able to keep your @me.com or @mac.com email address and move your MobileMe Mail, Contacts, and Calendars, as well as your Bookmarks, to the new service.

This article provides important information about how to successfully move from MobileMe to iCloud. Please read the information below and when you are ready to move your MobileMe account to iCloud, visit me.com/move

More details on the move could be found here.