The newest and most common out of the existing phones are getting the fall creators update, but a "feature2" branch without CShell. I believe CShell can run all

The newest and most common out of the existing phones are getting the fall creators update, but a "feature2" branch without CShell. I believe CShell can run all the existing UWP apps. .NET and UWP sound like they'll be unaffected by CShell, except that developers targetting CShell will want to ensure their apps work on a larger range of display resolutions.