The news has gotten even better since they originally posted the date and the cover pic:
UPDATE: We have just gotten in the following list of supplements that will be on this set!
* Introduction to Babylon 5 - Season 4 by series creator J. Michael Straczynski
* 2 commentaries by series creator J. Michael Straczynski, one including director Mike Vejar
* Commentary by cast members Bruce Boxleitner, Jerry Doyle, Peter Jurasik and Patricia Tallman
* "Celestial Sounds" featurette about series composer Christopher Franke and the making of the series music
* "No Surrender, No Retreat" DVD Suite, original music composed exclusively for the DVD
* "The Universe of Babylon 5"
* Personnel Files and Data Files
* Gag Reel
* Episode Previews
Joe