This week they did not want to wait for tomorrow and together with the iOS version for developers, Apple releases third beta of macOS Sierra 10.12.2 for developers. On this occasion, as in previous versions, it does not seem to add major changes apart from bug fixes and improvements in system stability.
Apple continues to release new versions of its different operating systems on a weekly basis and it is certainly a good thing for detecting problems, as well as improving the general performance of our Macs. We do not think this year will pass without the final version of macOS Sierra 10.12.2 being released for all users, but at the moment these are beta versions.
Apple continues to release new beta versions for developers and for users who are in the public beta program, one per week and they solve some of the possible problems that appear in the versions in addition to adding small details such as the one in the week before and the new emoji. This time there seems to be no news in this regard but if they appear for any reason we will publish it immediately.
Remember that these beta are for developers and we will soon have the beta for users who are registered in the public beta program, despite this it is best to use them in a separate partition on the Mac from where we have the operating system to avoid possible problems or compatibility failures with the tools or applications that we use every day.