hi friends.
I'm using windows10 on my desktop. what's the right version of this
new skype to download?

Hello, use 8.40 which you can download from Skype's website.
I never tested Skype UWP for Windows 10, but according to what Freedom Scientific sais this is the less accessible for screen readers. If you really want to use it, try to download Doug's scripts
getting them from this page: http://www.dlee.org/skype/uwp/
Bye!
Barbuz