The individual season 4 DVD is coming November 3rd, kids!
Here's the scoop. 'A Merry Fraggle Christmas' will arrive on the same day as well:
http://www.tvshowsondvd.com/news/Fraggle-Rock-Final-Season-and-Merry-F raggle/12452
Astro's gallery of nonsense comics at: http://astrolupine.deviantart.com