Tails, version 0.8 has been released 2 days ago, with some updates on his main packages.
Tails stand for The Amnesic Incognito Live System, from the official site:
forgetfulness; loss of long-term memory.
incognito, adjective & adverb:
(of a person) having one’s true identity concealed.
Or i could say that this is a Debian tailored for anonymity and privacy, let’s see what this Live contains.