Can't go wrong with FREE! This DLC from DICE unlocks:
Does not include any grenades added by expansion packs.
Origin is currently only place to get the Digital Deluxe Edition of BF4. Included in the Digital Deluxe gets you: three bonus Battlepacks, China Rising Expansion Pack, and the Vehicle Shortcut Bundle for Battlefield 3.
The BF4 Battlepacks are random unlocks for new camos, dog tags, knives, XP boosts, gun attachments, ect. In the game there will be Bronze Battlepacks, Silver Battlepacks and Gold Battlepacks... Digital Deluxe gets you 3 Gold Battlepacks right off the bat.