Head-up GPS Navigation and Direction Map Display; Possible with Google Glass
Google Glass is advancing and maturing in functions, now the possibility of having turn-left-turn-right GPS navigation, head-up direction map and text message display without a companion app has been advanced in Google Glass. This has been possible only by the pairing of the glass with an Android phone having a companion app, but with the latest advancement, there could be no need for any third party app again.
Though there would still be need for a smartphone internet connection to the Glass unless there is WiFi connection. However, this would enable iPhone and other smart phone users to enjoy this new functions which were only possible with Android phones.
The possibility of pulling GPS data seamlessly from your smartphone is not yet clarified, keep fingers crossed for more updates on that.
Source: engadget.com