300 Prequel/Sequel to be The Battle of Plataea?

IESB uncovered new details about Zack Snyder’s 300 sequel/prequel. Apparently the film will take place between the Battle of Thermopylae and the Battle of Plataea. You remember, the battle that Dilios (the narrator) is at during the film’s final monologue. So the film is kinda, sorta, a prequel and a sequel, because it takes place in the one year window, and likely concludes with the Battle we saw at the conclusion of the first film. 

According to Wikipedia, The Battle of Plataea was the final major battle of the Greco-Persian Wars in southern Greece. It took place in 479 BC between an alliance of the Greek city-states Sparta, Athens, Corinth, Megara and others against the Persians. The Greek to Persian ratio is given as 1:3 (”Good odds for any Greek”) with the Greek force numbering 40,000 against 120,000 Persians. 

I’m not quite sure if that is cool or not. Either way, it will likely be a long while before the film even goes into production as Frank Miller must first write/draw the story first. But Snyder insists that he is definitely going to film it, if and when it is completed.