In the past, I uploaded manually new Debian Live images once or twice per month. Then, I setup a new server some weeks ago and as of today, the following flavours are now autobuilt weekly for testing and daily for unstable (currently i386 only):

• debian-live-${DIST}-${ARCH}-standard
  
  only packages of priority standard or higher and a few live specific packages (eject, file and sudo).
  
  
• debian-live-${DIST}-${ARCH}-gnome-desktop
  
  the standard system, laptop related packages (laptop task) and the GNOME desktop environment (desktop and gnome-desktop tasks).
  
  
• debian-live-${DIST}-${ARCH}-kde-desktop
  
  the standard system, laptop related packages (laptop task) and the KDE desktop environment (desktop and kde-desktop tasks).
  
  
• debian-live-${DIST}-${ARCH}-xfce-desktop
  
  the standard system, laptop related packages (laptop task) and the Xfce desktop environment (desktop and xfce-desktop tasks).
  
  

All images can be downloaded from http://live.debian.net/.