I was thinking of what it could be. DICE said in an announcement for the new Armored Kill DLC will have mobile artillery, IIRC. So I am guessing they are talking about self-propelled artillery vehicles. Armored vehicles fitted with howitzers.
The closest thing to a self-propelled artilery weapon currently in the U.S. Marine Corps is the HIMARS:
I just don't imagine it being a rocket based artillery vehicle, but who the hell knows with DICE these days. It might be a Humvee with a sling shot.
Neither do I. It's just that it seems like the M109A6 isn't used by the Marines. As a result, there can be a chance of it not being in the DLC. DICE is pretty accurate with portraying the equipment used by the Marines Corps and successfully distinguish it from the Army. Many video games fail to do that.
The only part where it is different is that the Marines in this game are portrayed as having upgraded a lot of their equipment. Such as using the M1A2 Abrams, or getting new vehicles such as the AH-6J. This could be believable since this game takes place a few years into the future.
Maybe it will function like that. I'm still more-excited for more maps with mobile AA. Hopefully we get the Linebacker 'VADSmobile' that they left out of BC2 (despite coding one/it being it BF2) and the Shilka.
I was fire direction control for HIMARS artillery for 6 years, I honestly think having mobile artillery especially MLRS is kind of strange unless the map will actually be the range of the munitions which is 8-125+ miles.. lol