It seems Microsoft Lumia reality is now pretty much over, but the company is yet not done with smartphones. The company will be introducing Surface phones as reported earlier.
As per latest rumors from Nokia Power User, Microsoft is currently working on at least two surface phone prototypes. One is with 4GB RAM and other is with 6GB RAM. It is also rumored that both handset will be powered by fastest and most powerful SD 835. This also might be used by Samsung for its Galaxy S8 series.
Currently, the Prototypes of two variants of surface phone have 5.5-inch display with Quad HD (1440 x 2560 pixels). It has been rumored that up to three Surface phones will release in late 2017 running Windows 10 Mobile Redstone 3, which in comparison is much larger and richer update than RedStone 2.