Update: Ah, as it turns out what is shown above is actually an app called Emotiboard (found here). In other words, false alarm! Sorry folks.
It looks like Nokia is getting frisky as they're
showing a glimpse of the Lumia 800 evidently with the upcoming Windows Phone 7.8 upgrade. The image above comes via their Facebook page and while it does not mention 7.8 directly it does show some new emoticons off. Those emoticons are not found in current 7.5 builds but they are found in Windows Phone 8 as we demonstrated in our video tour two weeks ago.
In addition, you can clearly see that button presses now reflect the current Accent color, a small touch that helps brighten the typing experience on Windows Phone. That's big news as it shows that Windows Phone 7.8 is more than just a new Start Screen as it will presumably include a lot of smaller enhancements, like the new emoticon system (which surprisingly is not in color).
Watch the video below to see the Windows Phone 8 emoticons in action. Thanks, mcmaui, for the tip!