To Tails Project just released the third beta of the live OS Tails 3.0, a live operating system that runs on any computer and leaves no trace to either the machine or the internet.
This particular functional Tails was used by former NSA employee Edward Snowden to remain hidden on the internet.
If you want to help the Tails Project, the first beta for the upcoming version 3.0 has just been released and is available for testing.
What's new;
Tails 3.0 will be the first version of Tails based on the Debian 9 (Stretch). So all the applications will be upgraded to newer versions.
Other changes:
An 64-bit processor is now required
Redesigning Tails Greeter.
Remove I2P
New X11 guest utilities for VirtualBox
Upgrade and repair the X.Org server
Convert KeePassX databases created with Tails 2.x
Fixed a lot problems since Tails 3.0~beta 2
All the technical details of the changes are listed in Changelog
Download ISO