This page tries to list and explain all available Ubuntu Touch channels that have been currently set-up. Please remember that this information can get quickly out-of-date. All the refactored channels follow the schema specified in Touch/ChannelSchemaSpec - please read this document to understand the rationale for the following setup.
Current Channel List
For a more clear "Recommended Channel" for all devices (currently Nexus 4, Nexus 7, Nexus 10, Bq Aquaris E4.5, Meizu MX4) see https://developer.ubuntu.com/en/start/ubuntu-for-devices/image-channels/
Manually promoted images from ubuntu-touch/rc/* that reach end-user devices. These channels should be used for everyday-use phones. They usually get updated every six weeks. Those updates are the official OTA (over the air) releases.
ubuntu-touch/stable/ubuntu - channel with the community custom tarball
ubuntu-touch/stable/ubuntu-developer - channel with a developer-oriented custom tarball, including extra payload useful for app-developers
ubuntu-touch/stable/bq-aquaris.en - channel used by all commercial BQ devices, contains the BQ custom tarball
Manually promoted images from ubuntu-touch/rc-proposed/*. These channels usually get updated twice a month.
Automatically built images that are candidates for the rc and later the stable channels; these are currently built from ubuntu/vivid + stable-phone-overlay PPA.
ubuntu-touch/rc-proposed/bq-aquaris.en-proposed - channel for testing of new custom tarballs before upload
Manually promoted images from ubuntu-touch/devel-proposed/*. Promotions do not follow any specific schedules.
ubuntu-touch/devel/krillin.en - (will be renamed to bq-aquaris.en)
Automatically built images from the latest devel series. This is the channel that has the latest bleeding-edge development, absolutely no guarantee of stability.
ubuntu-touch/devel-proposed/ubuntu - devel channel with the community custom tarball
ubuntu-touch/devel-proposed/ubuntu-developer - devel channel with a developer-oriented custom tarball, including extra payload useful for app-developers
ubuntu-touch/devel-proposed/krillin.en - devel channel with the BQ custom tarball (will be renamed to bq-aquaris.en)
ubuntu-touch/devel-proposed/krillin.en-proposed - devel channel for testing of new custom tarballs before upload (will be renamed to bq-aquaris.en-proposed)