Last month Skype released a new version for Linux, currently targeting Deb package distributions and only 64bit architectures. There is also a stable version available which you can install from here. Skype allows people to communicate with each other by messaging, voice calling and video calling over internet. Skype also provides services for phone calls on the telephone networks. Everybody can call on Skype network free of charge there is no limit of call, on the other side Skype charge users for calling to land-line and mobile phones. Skype becomes popular among users for its additional features, like file sharing, screen sharing, video conferencing.
The latest client of Skype for Linux utilizes WebRTC to handle voice calls. Skype team planning to release an update every 2 weeks (more or less) and add missing features to it. Also in future they are planning to release Skype for Ubuntu Phones and in snap package as well. Currently the latest version lacks some features which stable version offers are: No video calls; No desktop screen sharing; No support for running two clients at once; No 32bit architecture support.
There are two ways to install Latest Skype: one download and install deb or add official repo so you can get update via software updater/command line.