The Pathfinder Online team has announced that a Mac version of the game will be released at the same time as the PC version. The announcement was made on the Pathfinder Online Kickstarter page.
Our decision to use the UNITY platform to develop the game makes it possible for us to make this major announcement: We will be making a Macintosh version of the game!
UNITY enables us to do a Windows and OSX version of the game with a minimal amount of parallel development. Most of the work will be done on code shared between both platforms, making it economical for us to support the Mac.
Read the full details on the Pathfinder Online Kickstarter page.