Sony has announced that the DLC portion of MAG 2.0 will be released on the 2nd of November. It will include a new game mode which will support up to 96 players, or one 32-man platoon for each PMC.
Each faction will also gain three new weapons: an assault rifle, a machine gun and a sniper rifle.
The Escalation Pack will cost $9.99, but Sony has also announced that they'll be reducing the cost of previous DLC. The Interdiction Pack will now cost $4.99 and they've also made a MAG Starter Kit which includes everything for $14.99.
Source: PlayStation Blog