It is predicted to come out summer 2011 but no official release date has been set yet.
Mac OS X 10.7 (Lion) will be available in the summer 2011 (See links below).
the Mac Os X 10.000 will come out this summer/fall (about). it will be called Lion.
News for you!! it came out 6 months ago.
Mac OS X 10.7 (Lion) was created by a team of programmers at Apple.
Mac "Lion" and Mac "Snow Leopard" refer to iterations of Apple's Mac OS X (operating system, version 10). "Lion" is the newest as of this writing, and is version 10.7, while "Snow Leopard" is its immediate predecessor, and is version 10.6.
Mac OS X Lion will be release some time in July of 2011. UPDATE: Mac OS X Lion will be released ONLY on the Mac App Store no DVD's on July 14th, 2011
Eat your mac
The latest is Mac OSx 10.8.3 Mountain Lion as of 3/18,2013.
well you nee mac osx lion so the new photo booth come with the update
Mac OS X Lion is version 10.7
If you buy one today 7/2012 it will come with OSx Lion. Wait until late July 2012 and you will get OSX Mountain Lion.
If the computer is running Mac OS Lion or higher we recommend the 2011 version.