The second of Battlefield Hardline's betas is due to start next week, Tuesday February 3rd, and will last through until Sunday February 8th. This was confirmed in an EA press release and access will be through the Origin client.
This next beta will contain the new game mode Hotwire, which sees each team taking control of marked cars and then take down the other team's cars. High-speed chase destruction is the name of the game and it's playable on two maps in the beta, Downtown and Dust Bowl.
The other mode is Heist and that's playable on the Bank Job map. One team are the Criminals and are trying to break into a vault and steal money, while the other team plays the Police who have to stop them. Simple.
There's also going to be fully unlocked multiplayer progression available, letting you upgrade as high as you can provided you have the time to put into play.
Battlefield Hardline will release in North America on March 17th and 3 days later in the UK.