As of Monday, Community Network has quietly lifted the restriction on CN machines being able to install Mac OS X Yosemite. As machines run their daily inventory check the restriction will be lifted on the machine.
We have not made an announcement to the customer base yet as this is not a consensus decision. The topic of publicly announcing the lift on the Yosemite restriction will be brought up at the next ops meeting, at which time anybody can raise an objection to formally announcing to the customer base that it is okay to install Yosemite.
Once we announce that the restriction has been lifted we will also make the Yosemite installation available in Casper Self Service.