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Windows 10 Build 9901 Features New Login and Lock Screen..
Microsoft is bringing quite a lot of changes in Windows 10, and the technical preview builds that can be downloaded right now are living proof that, as compared to its predecessors, the new OS will make everything not only more appropriate for all users, but also more appealing in terms of looks.
One of the undiscovered changes that could be part of Windows 10 is a new login screen layout that's already available in build 9901 if you turn down to a little registry hack.
Basically, Microsoft is working to change the old look of the login screen and reposition elements, such as your profile picture and the password box in order to make the layout look a bit more modern. In terms of usability, it's not yet clear how the new configuration would improve things, but there's no doubt that this is a very helpful addition to Windows 10.