Apple will soon be releasing OS X Yosemite. Like Mavericks before it, this will be a free update. If adoption of Yosemite is anything like it was for Mavericks, we expect a large number of users to upgrade to Yosemite and we expect them to do so quickly.
In order to focus our efforts on supporting Apple’s most modern operating systems and take advantage of their new features, we will be making a change to Vellum’s requirements. Vellum 1.2, which will be available before the end of the year, will require Mavericks (10.9) or Yosemite (10.10). Support for Mountain Lion will end.
Our update statistics indicate that, with the overwhelming adoption of Mavericks, this change will affect a very small percentage of our users. Of course, any users who are unable to upgrade from Mountain Lion can continue to use Vellum 1.1.4.
If you have any questions about this change, please contact us at firstname.lastname@example.org