Apple released a new version of OS X yesterday called El Capitan. CSCS will test the new operating system and advise on when we will be able to support it.
In the meanwhile if you have a Mac, please do not upgrade it! With past versions we have seen problems with accessing data, application incompatibilities and other issues so it’s best to wait for us to do our testing.
Initial reports are that El Capitan does not work well with Microsoft Office Outlook.