The Hunger Games Poseidon's Son - 2012 was released on:
USA: 24 August 2012 (DVD premiere)
This is the asker. I found a table that listed the exact release dates of every episode, minus the omakes and Wedding Peach DX. I added them to Wedding Peach's Wikipedia article.
The third one comes out September in 2011.
OJ Simpson The Trial - 1995 was released on: USA: 1995
Superman - 1996 Mxyzpixilated - 2.8 was released on: USA: 20 September 1997
Cartoon Cartoon Fridays - 2000 was released on: USA: 8 June 2000
Hunger Games Katniss and Rue - 2010 was released on: USA: 2010
The 47th Hunger Games - 2012 was released on: USA: 9 May 2012 (internet)
World's Deadliest - 2010 Hunger Games was released on: USA: October 2013
Behind the Scenes - 1992 I The Hunger Games was released on: USA: 21 March 2012
The Making of 'The Hunger Games' - 2013 TV was released on: USA: 1 September 2013
The Hunger Games Project - 2011 was released on: USA: 25 April 2011 (Los Angeles, California)
The Hunger Games Catching Fun - 2013 was released on: USA: 16 November 2013 (internet)
How I Seize It - 2010 Hunger Games 3-13 was released on: USA: 4 January 2013
Hunger Games The Second Quarter Quell - 2011 was released on: USA: 11 July 2011
Bum Reviews - 2008 The Hunger Games - 5.5 was released on: USA: 25 March 2012
The Number Games A Hunger Games Spoof - 2012 was released on: USA: April 2012 (video premiere) USA: April 2012
Honest Trailers - 2012 Hunger Games 1-7 was released on: USA: 17 August 2012