If you're dying to play Battlefield: Hardline ahead of its full launch, then EA Access might be a service of interest to you. EA has confirmed on Twitter that subscribers will get a head start on the full game, four days early and for no extra charge (that is, aside from the monthly or yearly subscription fee).
Everything is unlocked and your save files can be used in the full game if you choose to buy it when it's released. As usual, all EA Access subscribers can buy digital downloads with a 10% discount.