Apple’s MobileMe service is now live at Me.com, an online service that offers web-based email, calendar, address book and online storage, with push services that will sync the MobileMe content to native applications on iPhone, iPod touch, Macs and PCs.
MobileMe replaces the .Mac service. Apple provides a ‘MobileMe Updater for Mac OS X’ that will convert the “.Mac” references in OS X to “MobileMe”. You can obtain this software via Software Update. If you do not find the update, go to System Preferences -> .Mac -> Account Details, and system will prompt you to go to Software Update that shows the MobileMe Updater program.
The Mac OS X Update For MobileMe is recommended for users running Mac OS X Leopard 10.5.4 and includes general system fixes that enhance your Mac for MobileMe.
Apple is banking on MobileMe’s push model to drive up the subscription, which is priced at $99 per year with 20G of storage. Push email service such as Blackberry has been very successful in the enterprise space.
More details about MobileMe: http://www.apple.com/mobileme/