The unstable distribution (sid)

The code name for Debian's development distribution is sid, aliased to unstable. Most of the development work that is done in Debian, is uploaded to this distribution. This distribution will never get released; instead, packages from it will propagate into testing and then into a real release.

Please note that security updates for unstable distribution are not managed by the security team. Hence, unstable does not get security updates in a timely manner. For more information please see the Security Team's FAQ.

sid is subject to massive changes and in-place library updates. This can result in a very unstable system which contains packages that cannot be installed due to missing libraries, dependencies that cannot be fulfilled etc. Use it at your own risk!