Google Developer Advocate Timothy Jordan has revealed what some of the Android Wear notifications are being built to look like, providing some insight into how the system itself will work and what we can expect from upcoming Android Wear devices. A handful of notifications pop-ups were shown for things like the Nest, calendar, games, and music. All of those things can display notifications on an Android Wear device with just a few extra lines of code, according to Jordan.
The ability to easily add Wear notifications support to an application could easily result in consumers having a wide-range of uses for a smartwatch that is running that operating system.
One of the coolest parts of Android Wear is how it extends the Android platform to a new generation of devices out of the box, without any need to update your app. If you have a notification-enabled app, those notifications will generally just work on your new wearable. - Jordan
Each notification has an application icon attached to it so that users understand what they are seeing and interacting with. The icons appear in the top right corner of the notification, except on more self-explanatory screens like the one used for controlling music.
Via [Android Central]