As we know, in order to use to preview the beta OS that Apple introduced at WWDC you must have a developer account. Currently, however, we have opened the registrations to take advantage of the public beta of the two operating systems as a beta tester.
Natively integrated in the beta testers will be selected to download, will arrive even an app called Assistant Center that will serve precisely to report bugs or malfunctions of any kind which would enable the team to Apple to take prompt action before the official launch of the operating system.
Obviously Apple keeps to emphasize that it is unstable versions, but will however notify users by mail of the release of OS X is that iOS 10.11 9 when the first public beta will be available. To participate, simply log on to the following page dedicated and have an Apple ID.