Leaked specs (take these with a pinch of salt at this stage) include:
- 5,7" LCD 1080p screen
- Snapdragon 617 chipset
- 1GB RAM
- Windows Hello iris recognition
- 10MP rear camera with OIS, LED flash, 5MP front camera
- Qi charging
- Replaceable battery
- USB Type C connector
- Virtual/dismissable Windows controls
I'd expect a Lumia 850 to launch at MWC 2016 on 22 February next year. It will come with Windows 10 Mobile out of the box, of course, though I doubt that it will be compatible with Continuum. As the leaked image shows, it'll come in (at least) white and black, with metal perimeter and peel off back plate.