Today, the vast majority of Macs use flash storage and, indeed, thrive using it, with vastly improved responsiveness and boot times. Macs have used the Hierarchical File System (HFS) for years, but it was designed in an age of mechanical hard disks. Related: How to download the High Sierra beta right now A new file system We’ll be reviewing the update soon after launch, but for now let’s take a look at the features that matter and what you can expect when you get the notification that your update is available. Updated: Apple has now revealed that High Sierra will launch on September 25. That’s not to say that the changes aren’t important, but just that you may not notice a lot different going on, compared with macOS Sierra. This year, macOS High Sierra is firmly in the latter camp, as Apple has mostly focused on under-the-bonnet changes to get its OS ready for the future. Each year, it’s hard to work out what kind of update you’re going to get – a flashy one that brings loads of changes and features you notice, or a more subdued launch where the changes are mostly under the surface. It’s kept macOS looking fresh, ensuring that most people have access to the latest features and technologies. Apple’s commitment to running out free annual updates to its desktop operating system is to be commended.

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