WWDC 2008 Keynote: Mobileme == me.com
New Service "Exchange for the rest of us." Push email, contacts, calendars "in the cloud." Like .mac with Leopard server distributed voodoo ++ push. Works with iPhone, iCal, Outlook, and has a web client.
Also includes iDisk tech (sort of a finder for the web).
Apple is heading for the cloud. For real this time. So it appears.
Update: replaces .mac