As you may be aware, Apple announced the availability of OS X 10.8 (Mountain Lion).
We’re happy to report that the team began testing Photoshop and Lightroom with OS X 10.8 as soon as it became available to developers. We have worked closely with Apple to review Adobe Creative Suite 5, 5.5 and CS6 editions and individual products for impact on reliability, performance and user experience.
Earlier versions of Adobe Photoshop® (CS3 and CS4), Lightroom 4.1, 4.0 and earlier software were also tested and there are currently no known issues.
Enjoy the benefits of this new OS!