iPhoneOS has had a dock since version 1. They've just expanded what it can do. And they used to even push that iOS and OSX (at the time) shared the same base, b

iPhoneOS has had a dock since version 1. They've just expanded what it can do. And they used to even push that iOS and OSX (at the time) shared the same base, but they've backed off that pretty hard despite it remaining true - Darwin underneath.