Apple has now opened up a new portal at me.com/move to help the developers migrate their MobileMe service to their entire account over at iCloud.
The process is quite simple as you can see in the screenshots above and below. Apple lets you take your Mail, Contacts, and Calendar information over to iCloud and also tells users that they can continue using iWeb, iDisk, and Photo Gallery up until June 30, 2012.
Apple also tells users that the following will no longer be available: Dashboard widget sync, dock item sync, keychains, signatures, mail account rules, mail smart boxes, and mail preferences.
Screenshots of the entire setup process are embedded right below: