Update

Go here to watch and download the teaser trailer!

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Read it and weep tears of sweet, sweet joy:

BATMAN (Christian Bale) raises the stakes in his war on crime. With the help of Lieutenant Jim Gordon (Gary Oldman) and District Attorney Harvey Dent (Aaron Eckhart), Batman sets out to dismantle the remaining criminal organizations that plague the city streets. The partnership proves to be effective, but they soon find themselves prey to a reign of chaos unleashed by a rising criminal mastermind known to the terrified citizens of Gotham as The Joker (Heath Ledger).

Source: Superhero Hype!