It is likely that developers will receive more frequent updates including new features not in the public beta.
There is a licence agreement all beta testers must agree to and it specifies that the El Capitan beta is "Apple confidential information".
On 11 January 2016 Apple released its preview release of 10.11.4 as a developer build and public beta.
Most crucially for users of Microsoft Office 2016 the update is said to improve compatibility - hopefully fixing the issues many users of that suite have been experiencing.
Read more about the issues with Microsoft Office below.
(For those that aren't familiar with Live Photos, it's a new i Phone feature that, when enabled, captures a brief video clip just before and just after each still photo you take.
As of February 2016, Live Photos can only be taken with the i Phone 6s and 6s Plus but can be viewed on any device that's running i OS 9 or OS X El Capitan.) Read next: How to partition your Mac | How to update to OS X El Capitan | Dual-boot Yosemite and El Capitan on a Mac The public beta is not the same as the beta being released though the developer program.
If you would prefer the Mac to update itself as and when required, open System Preferences Apple released the first update to OS X El Capitan on 21 October.
The company says that OS X El Capitan Update 10.11.1 improves stability, compatibility and security.
The update is therefore centred on bug fixes rather than adding new features.
There's a new update to El Capitan available on the Mac App Store.
You are also able to directly download from your Mac by opening System Preferences App Store, and then selecting ‘Install OS X updates’.