Siri may be supported under a future iOS like 6, but I find it significant that they added voice capability. The use of Siri has fallen off after the novelty has worn off. It could be that it was put out as a beta to try to understand how it would be used long term. And a USB port is available with the camera kit, they just disable a lot of the functions. That wil not change anytime soon. Apple is more likely to put a Thunderbolt port than USB.