Snapchatting has become a legitimate thing. From an app which previously was mostly used to share ill-clothed snaps among young folk, it's now become a way for everyone to community visually, including brands.
And now it's even easier to share video from the service. An update to the iOS version of the app makes it so that changing between the front and back cameras on your phone happens with just a double tap. So you'll be able to go from chatting to the camera to showing off what you're looking at and back again, all without losing the flow of your short video.
This is pretty much a requirement given the limitations of the was Snapchats are created and sent and should allow for some more creative possibilites in the future. Previously you could take stills with the front and back cameras but there was no way to swap between them mid video. So it's a nice change, provided you were interested in Snapchatting in the first place.
There's no word on the feature being added to Android yet but its surely just a matter of time.