Mac OS X Yosemite (10.10.x), released on 16 October 2014 and is available as an upgrade for faculty and staff who are currently running Mavericks (10.9.x). If your machine is running Mavericks (10.9.x) or Mountain Lion (10.8.x) the upgrade will appear automatically in Software Updates under the Apple Menu. If your machine is running Snow Leopard (10.6.x) or Lion (10.7.x), you will need to contact the Technology HelpDesk to discuss upgrade options.
As with all operating system upgrades, there are potential issues of compatibility with applications and services and we are currently neither promoting nor discouraging the upgrade. New computers provided for faculty and staff will continue to have 10.9.5 (Mavericks) installed for now; public labs are not scheduled to be updated to Yosemite at this time. Knowing that there will be “early adopters” who opt to upgrade right away, we have created a site to share known issues and areas of concern. Visit go/yosemite/ to view — or add to — this work-in-progress.
Yosemite has several improvements, including better support of multiple monitors, handoff capabilities between Yosemite and iOS8 devices, and enhanced iCloud Drive capabilities. See Apple’s complete list of what’s new in Yosemite or take a personal tour using lynda.com’s new, hour-long course, Mac OS X Yosemite New Features.