TECHMacOS wallpaper through the yearsUSA TODAYThis aerial shot of the island of Catalina, near Los Angeles, is what people will be seeing on their Mac desktops and laptops as the main screen beginning in October when Apple releases the free MacOS Catalina software update. Highlights of the program include breaking iTunes up into three apps, for music, TV/movies and podcasts and the ability to use an iPad as a second monitor. How does this shot of Catalina stack up to past OS releases? Turn the page to look back at past releases.AppleApple's MacOS Mojave software spotlights the California desert. It was the 15th macOS release, which was made available in 2018.AppleHigh Sierra brought another scenic to macOS software for 2017.AppleSierra continued Apple's California theme with another mountain shot for this 2016 release.AppleEl Capitan was named after a popular Yosemite rock formation and was released in 2015.AppleApple's MacOS Yosemite celebrated the California-based national park in 2014.AppleThe OS X Mavericks update marked Apple's shift to celebrating California culture, surfing in this case, in 2013.AppleMac OS X Mountain Lion used the animal for a small logo, but the wallpaper image was of outer space.AppleMac OS X Lion from 2011 showcased the Andromeda galaxy.AppleMac OS X Snow Leopard from 2009.AppleMac OS X Tiger offered a 2005 aqua background.AppleMac OS X Panther had subtle differences from Tiger. Can you tell?AppleMac OS X Jaguar AppleFeatured Weekly Ad