Samsung made a reference of the Galaxy S7 Edge on its own website before it even officially announced the phone itself, via Tech Radar.
The reference can be found in Samsung's developer website for the "Look" feature that comes with devices with curved screens, like the Galaxy Note 4 Edge, Galaxy S6 Edge, and, now that we know, the S7 Edge.
It basically confirms the Galaxy S7 Edge's existence and that the curved-screen model of the S7 will indeed officially be called the "S7 Edge."
It's not entirely clear from the picture if it's showing the Galaxy S7 Edge, as it's a small picture and not sharp enough to tell. Still, the Galaxy S7 line's design is reportedly very similar to the Galaxy S6.
