One way to gain access to pre-release versions of Apple’s next operating systems for the Mac (OS X El Capitan), iPhone/iPad (iOS 9), and Apple Watch (watchOS 2) is to join the Apple Developer Program. It’s $99 per year and gives you access to an incredible range of tools and resources.

There is a free option, however, if you are more interested in beta testing future Apple OS releases and have no interest in developing for the various Apple platforms. Start by going to the Apple Beta Software Program site and logging in with your Apple ID.

Joining the Apple Beta program lets you try out new software features before they are publicly available but, more importantly, it helps Apple gather feedback to help make that software better.

For more details on the program, take a read through this FAQ.

One interesting point of difference: The Developer program specifically mentions watchOS 2, while the Beta program does not. Perhaps I just missed it, perhaps this is an oversight on the program page. Or, it could be that Apple is only previewing watchOS 2 with developers.