Jeff Tranberry notes some differences between Creative Cloud membership & traditional Adobe software licenses:
Cross-Platform License: Access to both the Mac OS and Windows versions of the desktop applications and the ability to install them on your primary computer and one backup computer.
Multi-Language License: Access to any language version in which the CS6 and other desktop applications are available. Unlike owning the traditional licensed version of a Creative Suite product, Creative Cloud membership gives you the freedom and flexibility to choose whichever language works best for you in any given application.
Both of these are changes many of us have wanted to make for a long time, and I’m glad to see that they’ve arrived.
Accessing multi-language support is simple, but the UI isn’t obvious. In the new Adobe Application Manager (AAM), install whatever apps you want in your primary language, then go into Preferences (upper left corner) and switch to a different language. App links that had said “Installed” will revert back to “Install,” though you may need to restart AAM for that to happen. You can then install apps in the newly chosen language.
After installing multiple language versions Photoshop, you can go into its preferences, switch the UI language, and apply it via app restart. (There’s just one copy of the app on disk, plus multiple language packs.) It appears that not all apps support this switching capability, but at least reinstalling in a different language is fairly painless (and can be done as often as needed).