TV Shows on DVD has the full release schedule for Star Trek: Deep Space Nine on DVD. Season 1 will be out February 25, season 2 April 1, season 3 June 3, season 4 August 5, season 5 October 7, season 6 December 2, and season 7 “end of December.” (That’ll be Dec. 30 if they follow the same type of release schedule as Star Trek The Next Generation.)