+All Ubuntu versions which are currently supported by Ubuntu itself are also supported by
+this repository. See link:https://wiki.ubuntu.com/Releases[Ubuntu releases] for details.
+
+Packages for unsupported Ubuntu versions might exist but may disappear any time.
+
+=== Development releases
+
+This Ubuntu repository contains packages which are automatically built a few
+minutes after every commit. To use it, run the following commands:
+
+---------------------------------------------------------------------------------
+# echo 'deb http://dl.bintray.com/i3/i3-autobuild-ubuntu xenial main' > /etc/apt/sources.list.d/i3-autobuild.list
+# apt-get update
+# apt-get --allow-unauthenticated install i3-autobuild-keyring
+# rm -f /var/lib/apt/lists/dl.bintray.com_i3_i3-autobuild-ubuntu_*
+# apt-get update
+# apt-get install i3
+---------------------------------------------------------------------------------
+
+Development versions are only available for the latest version of Ubuntu, which
+is xenial at the moment.