Originally Posted by AM2
...it makes more sense to me this way based on using one set of credentials, which means it wouldn't matter if done on different models. I very well could be wrong, but this is how I understand it to work
Right, your app market is now google play, and your google play account is connected to gmail, and the gmail account is connected to your phone. So all of the apps will be there in a list when you change between devices. However, I'm still not sure if it will automatically download all of the previous apps when you switch to an entirely new model.