Have to agree, it is just screen shots posted over an S8, but that has me thinking. Before dismissing the idea, read it first.
1) Windows 10 on ARM will be designed to first run on the SD835 chipset. The S8 has this chipset already. It has 4Gb of RAM, 64Gb of storage, nice screen, though a bit too tall for the width in my opinion.
2) A lot of corporations still will not accept Android or Apple phones on their corporate network due to security issues. Windows 10 phone access would be managed by a IT person to allow certain functions, while limiting others within the company network. This would make Windows 10 phones a preferred choice, besides BlackBerry OS, which is defunct now.
3) A new Note 8, running the same chipset as the S8, but with a wider screen, on a true phablet format like the Note 4, with a aluminum or magnesium body (NO GLASS other than the front display) running Windows 10 on ARM would be a good device to go after corporate customers.
It would compete directly with the HP Elite X3, and once C-Shell is implemented, would allow a user to have basically a full function PC in your pocket, where it could be used as a phone, a mini tablet, or with a docking station, a desktop replacement.
I know most people dismiss Windows OS outright for phones now, but with some of the things MS is working toward, this could be a reality if Samsung has the will to go after the corporate market.