The new macOS Sierra is currently in “Early Adopter/Not Recommended” phase for CN customers, per our OS Life Cycle: http://is.oregonstate.edu/cn/operating-system-life-cycle-information
On 11/4, all CN customers were notified of this status.
CJ has built an image for Sierra, and he and James Dudzik are in the process of testing it on various hardware.
Todd has documented known issues and resolutions/work-arounds for Sierra in the Apple OS Reference Guide in ITKnows.
A customer-facing document for known issues in Sierra can be found here: http://oregonstate.edu/helpdocs/faq/macos-sierra-known-issues-and-work-arounds
Although we are not recommending Sierra at this time, CN customers are welcome to upgrade if they want to. Please make sure they know to do a backup first, and make sure they are aware of the known issues. We should also set the expectation that our support will be “best effort” as we are not yet very familiar with Sierra.
Please note that the above information applies to CN customers/machines. Service Desk support of operating systems for personal devices is already “best effort” only.