iOS Developer Question:

☛ 1. Map :beautifully designed from the ground up (and the sky down)
☛ 2. Integration of Facebook with iOS
☛ 3. Shared photo streams.
☛ 4. Passbook - boarding passes, loyalty cards, retail coupons, cinema tickets and more all in one place
☛ 5. Facetime - on mobile network as wifi
☛ 6. changed Phone app - *remind me later,*reply with message.
☛ 7. Mail - redesigned more streamline interface.
☛ 8. Camera with panorama .