Windows 10 comes with a special version of Skype pre-installed. It is a modern Store app that is in active development. Microsoft pushes it over the classic Desktop app, adds essential features which were exclusive to the classic version of Skype.
Windows 10 build 10135 features several notable changes from previous builds of Windows 10. Unlike any other build, this one comes with the desktop version of Skype preinstalled. The user does not need to download Skype any more.