I wouldn't have thought a company would go out their way to a retire an app for Windows Phone with the Windows 10 user base growing and the UWP plan, but maybe that's just me.
http://www.windowscentral.com/amazon...able-august-15
I'm still on the melting iceberg of the Windows Phone platform with my three year old Lumia 620. I might be forced to jump off at some point, even though I do like the OS.
If more large companies/banks etc start pulling their apps it could kill off the Windows Phone platform, though I'm not sure why they would if the apps are transferable to Windows 10 in the UWP scenario.