Aditya Dhanrajani, writing on the Google Maps blog:
Life is full of the unexpected—things that send us scrambling for a gas station in the middle of nowhere, looking up a florist on our way home from work or searching for a restaurant as we tour the back roads of our latest vacation destination. Finding and navigating to these last-minute pit stops used to force you out of navigation mode in Google Maps—and away from the traffic updates, turn-by-turn directions and map you rely on to stay on track.
That changed last October with an update to Google Maps for Android that lets you add detours to your route, without ever leaving navigation mode. And starting today, this feature will start rolling out on iOS as well, in any country where we offer navigation—more than 100 worldwide. So no matter where you’re from, where you are, or whether you use Android or iPhone, making a pit stop is now a breeze.
This is going to be useful in Rome (which I don’t know well enough) and it’s another differentiator from Apple Maps. I also like that they added the ability to 3D Touch the app icon and start navigation to your Home address.