This release fixes [many security issues](
https://tails.boum.org/security/Nume
rous_security_holes_in_3.5/index.en.html) and users should upgrade as soon as
possible.
# Changes
## New features
* You can now lock your screen by clicking on the  button in the system menu.
* If you set up an [?](https://tails.boum.org/ikiwiki.cgi?do=create&from=news%2Fversion_3.6&page=first_steps%2Fstartup_options%2Fadministration_password)administration password when starting Tails, you can unlock your screen with your administration password.
* Otherwise, you can set up a password to unlock your screen when locking your screen for the first time.
* We improved a lot the backend of the **[Additional Software** persistence feature](
https://tails.boum.org/doc/first_steps/persistence/configure/index.en.html#additional_software). Your additional software is now:
* Installed in the background after the session starts instead of [?](https://tails.boum.org/ikiwiki.cgi?do=create&from=news%2Fversion_3.6&page=blocking_the_opening_of_the_desktop)blocking the opening of the desktop.
* Always installed even if you are offline.
* Install [pdf-redact-tools](https://github.com/firstlookmedia/pdf-redact-tools/blob/master/README.md), a command line tool to clean metadata and redact PDF files by converting them to PNG images.
* An error message indicating the name of the graphics card is now displayed when Tails fails to start GNOME.
## Upgrades and changes
* The **Tails documentation** launcher on the desktop now opens the documentation on our website if you are online.
* Install drivers for the [Video Acceleration API](
https://en.wikipedia.org/wiki/Video%5FAcceleration%5FAPI) to improve the display of videos on many graphics cards.
* Upgrade _Electrum_ from 2.7.9 to [3.0.6](
https://github.com/spesmilo/electrum/blob/3.0.x/RELEASE-NOTES).
* Upgrade _Linux_ to 4.15.0.
* Upgrade _Tor_ to 0.3.2.10.
* Upgrade _Thunderbird_ [52.6.0](
https://www.mozilla.org/en-US/thunderbird/52.6.0/releasenotes/).
We also activated the _AppArmor_ profile of _Thunderbird_ from Debian to
[confine _Thunderbird_ for
security](
https://tails.boum.org/contribute/design/application_isolation/).
* Rewrite some internal scripts from shell scripting to Python, thanks to [GoodCrypto](
https://goodcrypto-private-server.sourceforge.io/).
## Fixed problems
* Remove the display of debug and error messages when starting.
* Fix the ISO image selection being unavailable in _Tails Installer_ in languages other than English. ([#15233](
https://labs.riseup.net/code/issues/15233))
* Fix _OpenPGP Applet_ being unresponsive when decrypting a lot of text. ([#6398](
https://labs.riseup.net/code/issues/6398))
For more details, read our [changelog](
https://git-
tails.immerda.ch/tails/plain/debian/changelog).
# Known issues
* Enigmail is unable to download OpenPGP keys for new contacts if you have the GnuPG persistence feature activated. You can still download OpenPGP keys using Passwords and Keys. ([#15395](
https://labs.riseup.net/code/issues/15395))
* This release is not reproducible, due to various python files in /usr/local having different timestamps. ([#15400](
https://labs.riseup.net/code/issues/15400))
See the list of [long-standing
issues](
https://tails.boum.org/support/known_issues/index.en.html).
# Get Tails 3.6
* To install, follow our [installation instructions](
https://tails.boum.org/install/index.en.html).
* We do not provide automatic upgrades from older Tails installations for this release, as we've hit an old bug while generating the necessary files ([#13426](
https://labs.riseup.net/code/issues/13426)). You have to [upgrade manually](
https://tails.boum.org/upgrade/index.en.html).
* [Download Tails 3.6.](
https://tails.boum.org/install/download/index.en.html)
# What's coming up?
Tails 3.7 is [scheduled](
https://tails.boum.org/contribute/calendar/) for May
8.
Have a look at our [roadmap](
https://tails.boum.org/contribute/roadmap) to see
where we are heading to.
We need your help and there are many ways to [contribute to
Tails](
https://tails.boum.org/contribute/index.en.html)
([donating](
https://tails.boum.org/donate?r=3.6) is only one of them). Come
[talk to us](
https://tails.boum.org/about/contact/index.en.html#tails-dev)!
URL:
https://tails.boum.org/news/version_3.6/index.en.html
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is%20only%20one%20of%20them).%20Come%0A>%20%5Btalk%20to%20us%5D(https://tails.boum.org/about/contact/index.en.html#tails-dev)!%0A>%20%0A>%20%0A>%20%0A>%20URL:%20https://tails.boum.org/news/version_3.6/index.en.html%0A>%20%0A>%20 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