I would think it'd only make a big difference if you're developing targeting this newest release of OSX. There isn't a new XCode release at this time.[0] It is

I would think it'd only make a big difference if you're developing targeting this newest release of OSX. There isn't a new XCode release at this time.[0] It is likely that the next XCode release will require Mavericks to run. [0] http://en.wikipedia.org/wiki/Xcode#Version_history http://en.wikipedia.org/wiki/Xcode#Version_history