Apple iOS 6 Beta 3 was released to developers today and the change logs have revealed that me.com e-mail addresses and Apple IDs available under MobileMe are being changed to icloud.com e-mail addresses. icloud.com e-mail addresses are now being made available for iCloud mail users.
Users that sign up for new Apple IDs or enable mail on their iCloud accounts for the first time will be able to get an icloud.com e-mail address rather than a me.com e-mail address. iCloud users that have @me.com addresses that are used with iOS 6 beta 3 will receive an @icloud.com e-mail address that is the same as their @me.com address.
Apple stopped MobileMe to focus on iCloud as of June 30th. MobileMe users can still back up their data to iCloud for a limit time.