Apple's next major Mac operating system is "OS X Yosemite 10.10" which is currently considered to be the next big thing for Mac PC's and Laptops. OS X 10.10 Yosemite Developer Preview beta version is publicly available to users and developers for testing and experimental purpose and it can be download and install instantly, But if you still have not got the chance to experienced and explore the less-known OS X Yosemite features, functionality, icons, user-interface elements as compare to its previously released "OS X Mavericks 10.9", then you can see the differences and changes in Side-by-Side Graphical Visual Comparison of OS X Yosemite 10.10 vs. OS X Mavericks 10.9 UI Elements, Icons, Features, Functionality brought by Apple.
You can get the in-depth details and information of the latest available Mac OS X version by just viewing the Before and After Images of OS X Yosemite 10.10 and OS X Mavericks 10.9 UI Elements, Icons, Features, Functionality Comparisons i.e. Search Buttons, Safari UI, Back/Forward Buttons, New Folder Icons, Roomier Sidebar, UI Elements, Translucent Material, Maximize to Full screen, Happier Finder, Cleaner & Sharper Menu Bar, Updated App Icons, Clean Login Screen and lots more. So what are you waiting for, check out the Screenshots, Images & Infographic based on Comparison of OS X Yosemite 10.10 User Interface with OS X Mavericks 10.9 User Interface.
Comparison of Mac OS X Yosemite and OS X Mavericks via Visual Images