There was a problem with the approval of the DLC but finally they are out and Available Now. Each DLC Weapon and Vehicle are $1 each. There is a Vehicle Pack 1 and a Weapon Pack 1 each for $4.99.
Unfortunately we were unable to provide a Season Pass kind of thing. Lots more DLC choices are coming soon. The upcoming Online Mode might dictate what comes out next with the DLC. I would also love to start working on some fully fledged Expansion Packs.
Stay tuned! Lots coming soon!