Bayan da aka saki Terminator 3 a shekara ta 2003, masu shirya Andrew G. Vajna da Mario Kassar sun yi kwangila da Nick Stahl da Claire Danes don dawowa a matsayin John Connor da Kate Brewster a wani fim. Daraktan Jonathan Mostow ya taimaka wajen bunkasa rubutun, wanda John Brancato da Michael Ferris suka rubuta, kuma an saita shi don fara samarwa a shekara ta 2005 bayan kammala wani fim. An san cewa Arnold Schwarzenegger ya taka rawar gani, kamar yadda ya zama Gwamna na California. Masu samarwa sun nemi su sami Bros. don tallafawa hoton kamar yadda suka yi don Terminator 3. A shekara ta 2005, Stahl ya ce John da Kate za a sake tsara su kamar yadda labarin ya tsallake a cikin lokaci. A shekara ta 2006, Metro-Goldwyn-Mayer (mai maye gurbin Orion Pictures da masu mallakar yanzu na Kamfanin Fina-Finan Fina-Finan Fina-Finan, da kuma Mario Kassar) sun yi kwangila da Nick Stahl da Claire Danes don dawowa a matsayin John Connor da Kate Brewster a wani fim.
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