1. A method, comprising: at an electronic device with a display: displaying, on the display, a first interface of an application in a first orientation, the first interface of the application including a first plurality of regions; while displaying the first interface in the first orientation, receiving an indication of a change in orientation of the display of the electronic device from the first orientation to a second orientation; and in response to receiving the indication of the change in orientation of the display from the first orientation to the second orientation, transitioning from the first interface of the application in the first orientation to a second interface of the application in a second orientation, the second interface of the application including a second plurality of regions in the second orientation that correspond to the first plurality of regions in the first orientation, wherein the transitioning includes: displaying rotation of the first interface from the first orientation toward the second orientation; displaying replacement of the first interface with the second interface, including displaying replacement of the first plurality of regions of the first interface with the corresponding second plurality of regions of the second interface, wherein a respective region in the second user interface overlaps the corresponding region in the first user interface during the replacement; and after displaying the replacement of the first interface with the second interface, displaying rotation of the second interface until the second interface is displayed in the second orientation; wherein displaying replacement of the first plurality of regions of the first interface with the corresponding second plurality of regions of the second interface occurs at a point in time after the rotation of the first interface has commenced and before the displaying rotation of the second interface has ceased.