Steve Jobs put sneaker to WWDC stage again today to introduce iCloud, their new cloud services offering that aims to replace a lot of the local, cabled computing of our past with new, wireless computing for the future.
And best of all, it's going to be FREE. Everyone gets 5GB, and books, Photostream, and apps don't count. It works with 4.3 (as a beta) today, and iOS 5 in the future.
Content storage Keeps all your stuff, syncs it to all your devices
MobileMe Written from the ground up to support iCloud
Calendar sharing: No more workarounds needed. You can share your events.