There are a lot of questions surrounding the transition to iCloud for existing MobileMe customers, so Apple posted an FAQ to let everyone know what’s going to happen.

[ad#Google Adsense 300×250 in story]Most of the existing services like Mail, Contacts, Calendar, Bookmarks, Find My iPhone, and Back to My Mac will be available in iCloud. iWeb publishing, Gallery and iDisk will not. Those services are being discontinued.

There are also a number of new services that Apple will introduce with iCloud. Those include iTunes in the Cloud; Photo Stream; Documents in the Cloud; Automatic downloads and purchase history for apps and books; and Backup and restore.

Apple says you will be able to use and access your iDisk, iWeb sites and photos even after you move to iCloud, but you will only be able to use them until June 30, 2012.

Apple also noted that if you had an active MobileMe account as of June 6, 2011, your service has been extended through June 30, 2012, at no additional charge. MobileMe will be discontinued after that date.