Here a quick look at this years WWDC, Steve Jobs introduces the concept of iCloud and how this service relates to the Contacts, Calendar, and Mail apps

iCloud has been officially announced at this years WWDC, and looks to be very promising. For those who do not know what iCloud is, it’s a completely free service that will allow you to store your music, photos, apps, calendars, documents, and more. And wirelessly pushes them to all your devices — automatically. You no longer have to manage your content, as it will all be done for you.