The Jamf Pro software underpinning this service will be receiving an upgrade from v10.4.0 to v10.7.1. During this outage window, UCMS-OSX admins will be unable to connect to the UCMS-OSX admin interface. No impact on client machines is expected.
Additional information regarding changes in this release can be read here:
http://docs.jamf.com/10.7.1/jamf-pro/release-notes/What’s_New_in_This_Release.html