If you are a Macintosh Adobe Creative Cloud user, you need to know this: Adobe has been trying to get the word out that the “next major release” of Creative Cloud will require Max OS X 10.9 (Mavericks) or higher. As of this writing, the latest version of OS X is 10.10 (Yosemite).
Mac OS X updates are free, so for some people this is no big deal. But for users with old computers, or who are prevented from updating their operating system for other reasons, this could present difficulty.
This does not mean that if you don’t upgrade you won’t be able to use Creative Cloud. Users running older versions of OS X will still be able to install and run the versions of Creative Cloud applications they are using today, and the Creative Cloud Desktop app will still be compatible with OS X 10.7 and above. If you don’t upgrade to OS X 10.9 or newer, you just won’t be able to install the next versions of InDesign, Illustrator, Photoshop, etc. when they are released.
Like it or not, I think this is the new reality. Now that Apple has been offering OS X upgrades free, and development cycles are being shortened, we will all need to keep our operating systems more up-to-date than we perhaps have in the past.