For everyone running OS 10.6 (like I was) and was sad that PA didn't support it, you can now jump straight to the new OS for free if you want. You can download it from the App Store.
OSX 10.9 was released on Tuesday for free it's freely available to all 10.6, 10.7 and 10.8 users and should be able to update most Macs since 2007. The new version will bring newer graphics driver and support for OpenGL 4.1 which hopefully Uber will look at focusing on as as a free update for any Mac since 2007 most users should be able to upgrade to it giving them a single Mac platform and OpenGL level to target.
