Kali Linux has been released yesterday, 11-Aug-2015. Kali Linux 2.0 is now with a major release in tools, distribution and user interface since March 2013. Here are the major changes that you can see in Kali Linux 2.0. new 4.0 kernel based on Debian Jessie improved hardware and wireless drivers support for variety of Desktop Environments (GNOME, KDE, xfce, mate, e17, lxde, i3wm) updated penetration testing tools and much more.