It has elements from all those films... The roar sounding like godzilla, or some form of machine: War of the Worlds - although I don't think there will be a second one, the movie left everything tied off. Or this could possibly the start of the machine war in Terminator, after all the timing would be right, in the third one it was pretty much 'present day', with John Connor in his late teens, early 20's... The next stage would be the machine war and for him to lead the human race to destorying the machines wouldnt it?
However, the most likely scenario: it's a completely new movie, with new chyaracters, a monster that sounds coincidentally like Godzilla...
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