The video informs that only phones with an HDMI or MHL port will be compatible with AppRadio 2. If your phone only has a micro HDMI port you will need to connect a micro HDMI cable as well as a micro USB cable (included in the Android Connection Kit). The micro HDMI cable sends audio and video data to the AppRadio 2 while the micro USB cable charges the phone. In case of phones with MHL ports only one MHL cable is required (also included with the Android Connection Kit). This cable sends audio and video data to the AppRadio 2 while charging the phone simultaneously.
The iPhone connection cable will be included with the AppRadio 2 which means you can connect an iPhone to the device too. But you can only connect one device at a time (either an iPhone or an Android phone). I would prefer being able to switch between the two devices by clicking a toggle button on the AppRadio but alas. You'll have to do it manually (that is if you have an iPhone and an Android phone).
Another bit of information available from the video is that the new AppRadio app will be available in the Android Market shortly too. Nevertheless, I think Pioneer needs to announce the release date for AppRadio 2 soon. There are quite a few people awaiting the arrival of the device.
Video courtesy Pioneer Electronics.