Griffin has rolled out its latest iTrip as well as iTrip controller, making it one of the first (of many, we suspect) iPhone accessories that can actually be controlled by an application. The iTrip accessory will allow you to control the device right from the touchscreen instead of dealing with physical buttons, thanks to the iPhone OS 3.0’s capability for application integration. The iTrip accessory is currently retailing for $50 a pop, where you can complete it by downloading a free app for it over at the App Store. [Press Release]