You can read all about the latest version of Mac OS, along with details of the latest point updates and any known issues, here: Mac OS High Sierra latest news: current version, updates, betas, and new features.
Apple issues a major update to its Mac operating system once a year, previewing it at WWDC in June, and issuing the final version in September, usually.
If it's just an update to the current version of the Mac OS you need to install jump to this section: Install an update to Mac OS If you want to know how to update your apps on your Mac, read this: How to update all your Mac apps.
The first thing you will want to do is find out exactly which version of the Mac operating system to install and make sure that there is no reason not to install it.
We'll also guide you past the potential headaches and any problems you may encounter.
The next version of the Mac operating system is due to land any day now.
Before you perform any big update to your Mac - and especially if you are installing a beta - you should back up your Mac and do some other housekeeping tasks which we will address below.
Luckily, Apple makes it easy to back up your Mac using Time Machine, so there is no excuse not to create a Time Machine backup before installing mac OS Sierra.
So we recommend you hold your horses and do some tidying up and preparation first.Following WWDC in June Apple issued a beta of High Sierra and you can find out how to download the beta version of Apple's operating system here.In the case of mac OS High Sierra, here is a full list of the Macs that will be able to download the Mac OS upgrade.If you want you can jump right in and download High Sierra as soon as Apple makes the new operating system available. However, we'd advise you to hang on and let others discover if there are any issues with the new software before you install it.High Sierra, which is the latest version of mac OS, will appear in the Mac App Store on 25 September 2017, usually after around 6pm in the UK.