Sam,
That is correct. If you buy the 720 & Vision Pro bundle, you can connect multiple devices to it and all will get GPS as well as ADS-B WX and Traffic, full traffic.
Then add the multi-platform upgrade to your existing subscription (example $69.99/VFR + $19.99/multi-platform), you will be able to use and update both the iFly720 and Android Tablet, actually up to 3 devices. That means you can update the iFly 720, Android tablet and another tablet or phone. It's really a great deal.
If you are looking at doing something soon. Call me or check with us for our Sun n' Fun Special. We'll have SnF 720/Vision Pro Bundle Special posted soon.