Modern versions of Windows have revamped the lock screen to make it a lot more useful. If you're coming from Windows 7 and older versions of the OS, this lock screen is both new and useful (though you can turn it off if you just don't want it).
Gone are the days of the lock screen being a static page showing users and their login status. The Windows 10 lock screen looks sleek and provides you quick access to the information you need instantly. With customization options abound, lets take a deep dive into making the Windows 10 lock screen work for you.
Source:
How to Customize the Windows 10 Lock Screen « Windows Tips