There was an extended gameplay trailer for Battlefield: Hardline on display during EA's presser (we'll get that online as soon as possible), an event that was wrapped up with the news that Visceral's shooter is in beta now, and that those who've bought Battlefield 4 on PS4 or PC can access the content today.
For more information on the beta either switch on your PlayStation 4, or follow this link. It says on the linked page that "if you're an Xbox One, Xbox 360 or PlayStation 3 owner, the closed beta is not available on these platforms," although it does say that there is some news. As soon as the page stops crashing, we'll let you know what that news is here.