Those from Cupertino launch the macOS Sierra 4 beta 10.12.5 for developers with news regarding the security and stability of the system, in addition the bugs of the previous version are corrected. In this case, as with the previous versions of macOS Sierra 10.12.5, it does not seem to have notable changes in the functionality of the system, these are corrections and solutions to the bugs of the previous version. Apple would be preparing a new version for WWDC this June and we do not believe there will be any major changes in terms of new features until then.
Por el momento The beta version has not been released for users who are in the public beta program, but we do not doubt that in the next few hours or at the latest tomorrow it will appear for download. Apple is clear that these beta are to correct bugs and not to add new features, but it is true that small bugs, security improvements or troubleshooting are minor in this version that does not have too many differences over the previous one.
We have to bear in mind that it is a beta version and it is better to stay on the sidelines if you are not a developer, since we could have some problem of incompatibility with the applications, work tools that we use in the equipment or failures that may affect the experience of use on the Mac. The beta versions released are usually stable and with few errors that affect the functionality of the computer, but do not forget that they are beta versions and it is better to be cautious with them.