This is screen-recorded using Quicktime Player. Protip: This uses the 'Toggle Slow Animations' option in the iPhone Simulator, under the Debug menu.**Edit** A friend, just showed me this article, "A closer look at iPhone transition animations" with more in-depth thoughts behind the transitions. ******** (credit: ★cheeaun)
I'd love to see the research that went into when how fast some items would go and when others should appear.