Stephan -
With regard to the Hosted environments - upgrades are scheduled and performed according to Cisco RMS team's upgrade schedule.
Usually, they have these run through Q&A and a burn-in period before newer releases are implemented. You would be best suited to open a dialog directly with ROS/Hosted. They would be able to provide you a timeframe, based on which OS revision you are currently provisioned, and when they will upgrade your appliance(s).
RMS Service Desk:
US Toll Free: 866-616-5139
UK Toll Free: 080-101-1359
International: 512-340-3775
Regards,
Robert
Email Content Security Technical Services - RTP, NC
