As if to prove that there's no foul play here and that is indeed an early prototype of Oppo's new phone concept, the source of the images appears to have gone the extra mile, and has also shot a video whilst playing with it, showing it is operational. The video is hosted in China, so the below clip might take a little longer to load than you're used to.
In any case, Oppo isn't only one pushing the envelope in this particular niche. Just the other day, a trio of images outlining a new LeTV smartphone caught our attention. Like Oppo's gadget, the LeTV phone (seen below) also touted near zero bezels at the sides and an overall appealing design.
Take a look at both.