Whilst we already knew the date, there's plenty of fresh details regarding the latest batch of DLC for Halo 4. Below there's descriptions of the new medium to small maps (direct from Halo Waypoint), but there's also news regarding two new Majestic DLC playlists, and a new free-for-all game type called Infinity Rumble, where kills and medals all contribute to ordinance to be used in battle, along with a slower respawn time.
The playlists are fairly standard, the first being an 8 player FFA offering, the second an equally traditional 4 vs. 4 playlist. The maps will also appear in the regular rotations (Infinity Slayer, Capture the Flag, SWAT, Regicide, Doubles, Team Objective, and Team Throwdown), but only if all players have the maps downloaded.
Landfall: A shining city under attack... The world of Tribute is now a graveyard, but its capital was once a bright beacon of commerce among the inner colonies. Fight in the corridors and courtyards of Casbah's port authority buildings, but don't stand still too long. Perfect for Infinity Slayer, this small to midsize asymmetrical map offers interiors with sparse cover, which encourages close-range combat, while the exteriors offer long lines of sight to stalk your opponents. Awesome jump routes let players spring around the outside of the map, incidentally offering a perfect view of the city as it is razed by the Covenant's brutal assault.
Monolith: Adrift in a forgotten asteroid belt... This monument and many like it were built by the Forerunners after their final victory over the ancient humans. This small map has central man-cannons, short corridors, almost no cover, and open sightlines which make the location great for a mixture of close and mid-range battle. Monolith harkens back to more classic "Halo" arena-based maps, and its symmetry lends nicely to objective-based modes like Capture the Flag. Monolith is an open battlefield; wherever you look, you will witness the ferocious action that only a small and open map can provide.
Skyline: Combat analysts agree... The rooftop terrain on this new space tether construction site is an ideal training environment for close-quarters infantry combat. This map, perched high above the sights of reconstruction in Cascade's capital city, is small and symmetrical, perfect for Regicide with a mixture of high and low spaces and plenty of cover. Don't think cover means you're safe, however - this map holds explosive fuel cells that can and will wreak havoc in Skyline's confined spaces, not to mention the long, long drop if you misstep.