To Install macOS Sierra on PC, you should have macOS Sierra 10.12 final version or beta version. The 10.12.6 update is the last update under macOS sierra means it is the last and latest major update for macOS sierra or under version 10.12. It fixes many bugs which were present on macOS El Capitan and also includes many new features as well as new UI changes. Apple macOS sierra 10.12 is the successor of macOS El Capitan 10.11.It is a confident OS that enhances the performance of an OS by spreading upgrades. It also gives an additional substitute, adding special specter exposure fixes.
It could be released for more than a month after 10.12.1 and for a little more than one week after 10.12.1.