Battlefield Hardline will release on October 21, 2014, according to a leaked gameplay trailer EA eventually released today. It also confirms Hardline for release on PlayStation 4, and PS3, a likely indicator of an Xbox One and Xbox 360 release in addition to PC.
Hardline joins Dragon Age: Inquisition, Borderlands: The Pre-Sequel, Alien Isolation, Middle-earth: Shadow of Mordor, and more big releases this October.
Previously, a six-month-old gameplay trailer leaked online, detailing Visceral's various gameplay ambitions for the cops-and-robbers Battlefield game. Much of that appears to remain intact in the version of Hardline shown at E3.
For more on Hardline leading up to and during E3, stay tuned to IGN.