KitKat for Glass – Our most exciting update is subtle, but big. We’ve been working on a significant upgrade to a new version of the Glass software. It’s not a change you can see, but it brings improved battery life and makes Glass more reliable and easier to update in the future. And now that Glass runs Android KitKat, developers can write Glassware using the latest Android SDK goodness, along with new features from our GDK.
In addition, you get photo bundles, so you can keep your photos organized. Google has added a new way to send photos in Hangout messages. Wearers can now send Google feedback. Voice command sorting is also available. Video calls are going away until Google fixes that issue.