Just about a week ago I posted news that the appX file for Skype UWP on Windows 10 Mobile was leaked over on XDA. While the version is not yet complete nor officially even in public beta testing you can sideload the app onto your phone running the latest Slow, or Fast Ring Insider build e.g. 'Redstone'.
Recently, XDA mod snicker, who managed to get his hands on the leaked app updated the post with a more recent version. The latest build is 11.6.36, which is a jump from last week's 11.6.26.
Full story from the WindowsCentral blog...