Season 5 will be released in Germany on December 7th 2012 :)
Additional information: http://www.kochmedia-film.de/dvd/details/view/film/heartland_paradies_fuer_pferde_staffel_52_3_dvds/
Additional information: http://www.kochmedia-film.de/dvd/details/view/film/heartland_paradies_fuer_pferde_staffel_52_3_dvds/