Respawn has confirmed that the next piece of free DLC for Titanfall 2 is called Monarch’s Reign, and that it will add a new Titan called Monarch. Monarch is similar to the Vanguard class but has some changes made to it to make this Titan more flexible and able to offer more supportive help. Abilities include being able to drain power from enemy Titans to restore its own and friendly shields.
Along with the Monarch class Titan players will also receive the remastered Relic map from the original Titanfall, which is set upon an IMC carrier IMS Odyssey. Furthermore there will be new cosmetic items available to purchase, including Ronin Prime and Tone Prime.
Source: Press Release