To Tails Project just released the first release 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 develop the Tails Project, the first RC for the upcoming 3.0 version has just been released and is available for testing.
How can you help? Of course, mentioning the bugs you encounter with the developers of the project.
The Tails 3.0 RC1 will be the first release of Debian 9 (Stretch) based Tails and will feature GNOME Shell 3.22 as a preferred desktop:
"The first candidate version of the upcoming version 3.0 is released. We are very excited and can't wait to hear what you have to say about this. Tails 3.0 will upgrade virtually all included software.
Changes from Talis 3.0-beta4 include: Important security fixes.
Upgrade to current Debian 9 (Stretch). Upgrading Tor to 0.3.0.7.
Upgrading Tor Browser to 7.0a4, change from Icedove to Thunderbird.
We will provide security updates for the Tails 3.0-rc1, just like for the stable versions of Tails.
Note that this is a trial version. We tried it and it works, but it may even contain issues that have not been discovered. "
You will find more in official announcement
All the technical details of the changes are listed in Changelog