Starting in September 2016, Microsoft Intune will deprecate support for the Microsoft Intune Company Portal apps for Windows 8 and Windows Phone 8. After this change, these versions of Company Portal apps will no longer be supported on any Windows or Windows Phone platforms. Microsoft deprecated support for Windows 8 and Windows Phone 8 on January 12, 2016. Because of this deprecation and rapid customer migration to later platforms, Microsoft Intune is deprecating support for the Windows 8 and Windows Phone 8 Company Portal apps across all platforms. Existing app deployment policies will not be affected. Therefore, the version 8 apps on supported devices will continue to work.
For complete details please see the following:
3169875 - Deprecation of Company Portal apps for Windows 8 and Windows Phone 8 in September 2016 (https://support.microsoft.com/en-us/kb/3169875)
J.C. Hornbeck, Solution Asset PM
Microsoft Enterprise Cloud Group