Here's the new Saints Row IV Independence Day trailer.
"Earth has fallen into the hands of @EmperorZinyak and his evil alien empire. Its citizens have been imprisoned inside hellish simulations. Humanity's only hope is the former head of the Third Street Saints—the President of the United States. Reclaim life, defend liberty, and pursue happiness at all costs with superpowers, a giant mech, a celebrity Vice President, a dubstep gun, and all the melodrama you can cram into an open world extravaganza."
Saints Row IV is scheduled to be released August 20, 2013 in the US and August 23, 2013 in Europe on the Xbox 360, PlayStation 3 and PC.