Pilots will be seeing another Titanfall map pack soon, as EA and Respawn revealed at gamescom. Dubbed IMC Rising, the DLC adds three new maps by the names Backwater, Zone 18 and Sandtrap. We don't actually know what they'll look like right now, but there it is.
Just going by the whole IMC Rising title, we might be able to assume more urban environments, or at least more locations set closer to home rather than out in the Frontier where the Militia tend to hold greater influence.
Expect the next map pack to come out sometime in the fall, which could be any time between September and November. The expected release price is a standard $9.99, or less than that for anyone who owns the Season Pass. You can actually still buy the Season Pass for $24.99, of course, assuming you haven't already grabbed most of the existing map packs separately already.