The distribution is actually called The Amnesic Incognito Live System
Tails 0.21 RC1, a live system that aims to preserve your privacy and that helps you use the Internet anonymously, has been officially released and it’s available for download.The developers of Tails have issued a request to the community to download and test the version and to provide feedback.
The Amnesic Incognito Live System now uses a persistence preset for printing settings and it comes with support for SD cards connected through a SDIO host adapter.
The developers also added a KeePassX launcher to the top GNOME panel, and have excluded the version string in GnuPG's ASCII armored output.
A complete changelog can be found in the official announcement. Download Tails 0.21 RC1 right now from Softpedia.
Remember that this is a development version and it should NOT be installed on production machines. It is intended for testing purposes only.