At last: Google will soon launch a native Gmail app for the iPhone, according to MG Siegler. The app may, in fact, have already been submitted to Apple for review. The biggest deal about the app will be push notifications, and it will also probably include other Gmail features like priority inbox and one-click starring. Siegler speculates it could include Google+ integration, as well. All of this assumes, of course, that Apple will approve it, which Siegler predicts it will.