Manage Windows 10 Mobile Upgrade
As it stands, the new Windows 10 platform for mobile will be released in December and this will be pushed out by carrier. Most companies including the one I work for will want to be able to control when devices install the new OS.
Without this functionality some users phones will install the update causing questions such as 'why does your device look different to mine' why isn't this working. In addition to that, LOB apps will need to be tested on the platform prior to moving everyone over.
Noam Levy commented
We use INtune to manage windows phone devices running our LOB app. Any change to the phone's configuration must be validated with our LOB app prior to deployment, therefore we cannot allow the OS to updated automatically.
It would be very helpful if we could set the OS updates to controlled by INtune, so that when a new update is available we will validate it first on a device in our labs, and only after fully approved deploy to the OS update to the phones in the field.