Yet another video is up showcasing several new features of Ubuntu Phone OS. While the first video, demoed by Mark Shuttleworth himself , illustrated how slick the OS has become since it was announced, the second video here features default Camera and Photo apps, Facebook integration and brilliant new notifications. I always thought Android 4.1 Jelly Bean's notifications bar should be the standard. But after seeing this, I concur that Android OS could learn a thing or two from the way notifications have been integrated into the OS in Ubuntu for Phones.