LG has been doing some unusual display things lately with the curved G Flex phones, but adding a second display to a phone has never, ever worked out well. LG isn't letting that stop it, though. The LG V10 has shown up at TENAA, the Chinese version of the FCC. This device has 5.7-inch screen, but above the main display is a small secondary one. This is happening, guys.
The auxiliary display on the V10 will be able to show additional info while the main screen is off or being used for other things. It's a little like the old Samsung Continuum, if you remember that boondoggle. Whether or not this is any good will depend on software support and implementation. If all it does is show you notification text, that's not going to be very useful.
The V10 will reportedly have a QHD resolution main display (again, 5.7-inches), 3GB of RAM, 64GB of storage, a Snapdragon 808, and a 16MP/5MP camera array. There will also be a fingerprint scanner somewhere on the device, probably under the home button on the back. We don't know where the V10 will be released, but @evleaks says it'll happen in mid-October.