The previously announced Toy Box DLC for Crackdown 2 has a date and that date is...tomorrow! That's September 2nd.
Details of the DLC can be found here, but the short of it is you're gonna get a Keys to the City Mode, a Jetpack, a new versus mode and a few other tweaks all for free. If you feel like dropping 560 
you'll also gain some additional goodies like new vehicles, achievements, and other "toys."
I don't know about you, but I can't wait to re-enact the Rocketeer with my co-op pals. Now all we need a blimp!
Update: Trailer added!
Source: Majornelson.com