As it has become usual in the Cupertino company, when they launch the beta version for developers wait a reasonable time of 24 hours in case there is a problem with it and immediately afterwards they launch the version for users enrolled in the public beta program. Just yesterday we saw the launch of all beta of the different operating systems for developers and today it is the OS X and iOS versions for beta testers.
The truth is that these beta versions do not provide important news in terms of functionalities, but they do seem to solve some stability and reliability problems of the operating system. This carries over to all the systems that the company currently has: OS X, iOS, tvOS, and watchOS.
On this occasion, the new version solves errors that could be hung when the new OS X is launched during the WWDC beta, so leaving the system more refined is something important for Apple. Also a few hours ago we saw some problems with the 13-inch MacBook Pro and Freezes, although it is not an Apple problem, make the best of this version 10.11.6 of OS X El Capitan it is a must for users who cannot update to the next available version.
Normally and in the case of the OS X operating system, all or almost all users can update to the latest version available when it is released, but for those who cannot have a stable version it is important that you do not have incompatibility problems, bugs or similar.