tails.boum.org/news/test_2.0-rc1/index.en.html
Call for testing: 2.0~rc1
You can help Tails! The first release candidate for the upcoming version 2.0 is out. We are very excited and cannot wait to hear what you think about it
What's new in 2.0?
Tails 2.0 will be the first version of Tails based on Debian 8 (Jessie). As such, it upgrades essentially all included software.
The most noticeable change is probably the move to GNOME Shell, configured in Classic mode. This desktop environment provides a modern and actively developed replacement for the aging GNOME "Flashback". GNOME Shell also paves the way for better supporting touchscreens in the future.
Under the hood, an amazing amount of code was ported to more modern technologies. This, in turn, allowed us to do lots of small changes all around the place, that will make the Tails experience both safer, and more pleasant. For example, all custom system services are harder to exploit thanks to the use of Linux namespaces, set up by systemd. And the way Tails tells the user that "Tor is ready" is now more accurate.
But really, there are simply too many changes to describe them all here, so try Tails 2.0~rc1 yourself!
Technical details of all the changes are listed in the Changelog.
There is one piece of bad news, that makes us a bit sad, though: we had to remove the Windows camouflage feature, since our call for help to port it to GNOME Shell (issued in January, 2015) was unsuccessful.
What's new since Tails 2.0~beta1?
New features
Fix the passphrase strength indicator of GNOME Disks.
Upgrades and changes
Remove Claws Mail: Icedove is now the default email client.
Upgrade Tor Browser to 5.5a6.
Install xserver-xorg-video-intel from Jessie Backports (currently: 2.99.917-2~bpo8+1). This adds support for recent chips such as Intel Broadwell's HD Graphics.
Fixed problems
Stop offering the option to open downloaded files with external
applications in Tor Browser (Closes: #9285). Our AppArmor confinement was
blocking most such actions anyway, resulting in poor UX.
Fix the performance issue of Tails Upgrader that made automatic upgrades
very slow to apply.
Fix Electrum by installing the version from Debian testing.
Restore default file associations.
Repair Dotfiles persistence feature.
Fix ability to reconfigure an existing persistent storage.
Associate armored OpenPGP public keys named *.key with Seahorse.
Update the list of enabled GNOME Shell extensions, which might fix
the "GNOME Shell sometimes leaves Classic mode" bug seen in 2.0~beta1:
git-tails.immerda.ch/tails/plain/debian/changelog?h=devel