In these days of free operating-system updates, major OS X updates feel a whole lot more routine than they used to be. Apple has chosen not to roll out major features piecemeal throughout the year, though, which still makes this the biggest change your Mac will experience this year.
El Capitan, named after the large granite rock formation inside Yosemite National Park, is very much a refined version of OS X Yosemite, a recognisable progression from its predecessor. (In iPhone terms, it would be Yosemite S.) Apple says this update is all about a refined experience and improved performance. But it’s traditional for Apple to take its no-big-deal updates and pour in a bunch of new features anyway, and El Capitan is no exception. This is a packed release, but…