Sorry, but BSG is no longer being made. It's final season was a few years ago, it ended on season 4.
Never, there is no fifth season of Battlestar Galactica. It concluded at the end of the fourth season.
Battlestar Galactica - 2004 The Farm 2-5 is rated/received certificates of: Netherlands:12
Battlestar Galactica The Resistance - 2006 was released on: USA: 5 September 2006 (internet) (premiere) USA: 12 November 2008 (internet)
Battlestar Galactica The Resistance - 2006 Webisode 1 1-1 was released on: USA: 5 September 2006
Battlestar Galactica The Resistance - 2006 Webisode 10 1-10 was released on: USA: 5 October 2006
Battlestar Galactica - 2004 You Can't Go Home Again 1-5 is rated/received certificates of: Germany:12 Netherlands:12
No season 5, season 4 was the last, althought the pilot of the spinoff Caprica is likely to air sometime this year. A TV movie called The Plan will air sometime this year aswell.
Battlestar Galactica, im guessing, had a smaller budget in the earlier seasons because they just didn't know how popular it would be so probably around half a million dollars, and close to the end, on season 4, im guessing 5 million - 10 million dollars.
Battlestar Galactica - 1978 The Long Patrol 1-5 was released on: USA: 15 October 1978 Belgium: 25 March 1981 Netherlands: 27 August 1981 West Germany: 12 April 1989 Hungary: 28 April 2009
Battlestar Galactica - 2004 Act of Contrition 1-4 was released on: UK: 8 November 2004 USA: 28 January 2005 Canada: 5 February 2005 Germany: 24 October 2005 (limited) Spain: 2 November 2005 Netherlands: 21 January 2006 Germany: 1 March 2006 Finland: 10 March 2006 Hungary: 11 March 2006
Battlestar Galactica - 2004 Tigh Me Up Tigh Me Down 1-9 was released on: UK: 13 December 2004 USA: 4 March 2005 Canada: 12 March 2005 Germany: 28 November 2005 (limited) Spain: 7 December 2005 Netherlands: 25 February 2006 Germany: 5 April 2006 Hungary: 15 April 2006
Battlestar Galactica - 2004 Flesh and Bone 1-8 was released on: UK: 6 December 2004 USA: 25 February 2005 Canada: 5 March 2005 Germany: 21 November 2005 (limited) Spain: 30 November 2005 Netherlands: 18 February 2006 Germany: 29 March 2006 Hungary: 8 April 2006 Finland: 14 April 2006