North America: (UTC) 8/26/2014 2:00:00 PM – 8/27/2014 3:00:00 AM
Europe: (UTC) 8/27/2014 2:00:00 PM – 8/28/2014 3:00:00 AM
APAC: (UTC) 8/28/2014 2:00:00 PM – 8/29/2014 3:00:00 AM
Update: Europe Service Instance 1 and 2 maintenance has been moved to (UTC) 9/2/2014 2:00:00 PM – 9/3/2014 3:00:00 AM
What to expect during the upgrade
All service functions and operations are expected to perform normally during this maintenance window.
What to expect after the upgrade
Once the upgrade to the Windows Intune service is complete, a number of mandatory agent updates will be pushed out to all PC client machines connected to the service. In most cases, these updates will not require a reboot after being applied. Make sure to review the Policy Settings for Mandatory Updates article for guidance on how to minimize the impact reboots may have on your business.
The Windows Intune Team