Samsung is among the latest Windows-on ARM supporters, intending to launch refreshed Galaxy Book models this year. Two upcoming models have already been certified for mass production by the Russian ECC authorities, and these should be powered by Qualcomm's Snapdragon 700/800 SoC. The Always-Connected feature should also allow for the integration of a 4G LTE modem.
https://www.notebookcheck.net/New-Samsung-Galaxy-Book-Windows-10-tablet-in-the-works.313546.0.html
No, these devices don't have a 16:9 aspect ratio, and not there is no 700 series for laptop, it will be a 850 (already announced...). Superficial post by someone that knows little to the subject...