The Comcast Mobile app was just released in the App Store today. What this has to do with Gmail is this; Comcast Mobile provides it's very own, stand alone mail app. This is something that people have been saying Apple would not allow since it duplicates the functionality of the included Mail app. I'm just speculating here, but Google could have a Gmail app in development, which is why they are only using ActiveSync to provide synchronized contacts and calendar, with the intention of releasing a standalone app that will give us full Gmail support. I'm sure push notifications would be utilized to satisfy the push Gmail craving so many of us have. I could be wrong on this, but now that the Comcast Mobile app is out, I think it's completely possible for this.