Hydro - groovy - indigo [closed]

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When I made rosdep update, it says :

reading in sources list data from /etc/ros/rosdep/sources.list.d
Hit https://github.com/ros/rosdistro/raw/master/rosdep/osx-homebrew.yaml
Hit https://github.com/ros/rosdistro/raw/master/rosdep/gentoo.yaml
Hit https://github.com/ros/rosdistro/raw/master/rosdep/base.yaml
Hit https://github.com/ros/rosdistro/raw/master/rosdep/python.yaml
Hit https://github.com/ros/rosdistro/raw/master/rosdep/ruby.yaml
Hit https://github.com/ros/rosdistro/raw/master/releases/fuerte.yaml
Ignore legacy gbpdistro "groovy"
Ignore legacy gbpdistro "hydro"
Query rosdistro index https://raw.github.com/ros/rosdistro/master/index.yaml
Add distro "groovy"
Add distro "hydro"
Add distro "indigo"
updated cache in /home/lempereur/.ros/rosdep/sources.cache

Is this in error, that it add distro "groovy", "hydro" "indigo"? I'm using groovy (Ubuntu 12.04)