There have been seven official video game adaptations of Buffy the Vampire Slayer. Some titles include The Quest for Oz, Chaos Bleeds, and Sacrifice.
Vampire Secrets - 2006 TV was released on: USA: 2006 Australia: 2009
Nosferatu The First Vampire - 1998 TV was released on: USA: 15 March 1998
Celebrity Vampire Baseball - 2010 TV was released on: USA: 5 June 2010
I think it won't be released on TV, but DVDs will be coming out.
Untitled 'Buffy the Vampire Slayer' Featurette - 1992 - TV was released on: USA: 1992
Adventures of the Quest Visiting the Vampire - 2000 TV was released on: USA: 1 February 2000
Untitled 'Buffy the Vampire Slayer' Featurette - 1992 TV was released on: USA: 1992
Transylvania Television - 2007 On Vampire Fiction 2-18 was released on: USA: 13 November 2009
Biography - 1987 Buffy the Vampire Slayer Television with a Bite was released on: USA: 14 May 2003
They cancelled Vampire High for the same reasons most shows get cancelled. The ratings were to low and not enough viewers.
So far no Vampire Academy movie/s or TV series is set to be made, as confirmed on Richelle Mead's official website. I am sure the fans will be first to know when it does happen though! Hope I helped.
Think Hero TV - 2009 Vampire Diaries 'The Descent' Review was released on: USA: 28 January 2011