Metal frame/body slim Microsoft Lumia 850 exposure

After Microsoft released Lumia 950/950 XL, and a wave of new models to be released news rumors began. This is about the end of Microsoft's upcoming new Lumia 850 message, whistle-blowers @Onleaks released renderings and videos of Lumia 850. Can be seen leaking Lumia 850 quite thin in appearance, using a metal box adds texture.

According to leaked renderings, the body measurements are 155.90x77.23x6.92/8.50 mm. And Lumia's concise style metal box, camera is slightly raised, for Microsoft's Logo on the back. Fuselage bottom left corner there is a mysterious black prototype not know specific purpose, the Lumia850 is likely to be a midrange machine, or released in the first quarter of next year.