We've seen a few iOS 7 concept videos but the one above, which tries to conceptualize what Jony Ive's new flat user interface might look like, is our favorite to date.

Notice how the icons don't appear to be shiny or popping, but are rather simple in design. The lock screen, too, looks much cleaner and more useful. We love the artist's idea for the calendar, which looks fluid and incredibly detailed. The whole concept almost looks like something out of the studio where Mailbox was created, and it carries over throughout the entire operating system. The widget/notification interface also looks super useful.

Apple should hire Philip Joyce, the art director with Simplyzesty.com that came up with the ideas. Hopefully Jony Ive has something even more jaw-dropping in store.