What Is Halo 4's Champions Bundle DLC?

Halo 4's next add-on content arrives on August 20, and features new maps and items. Titled Champions Bundle, the 800 Microsoft Points ($10) package contains three major components:
The Bullseye Pack brings two new maps (Vertigo, as well as a remake of Halo 3's The Pit called Pitfall) and "a sports-themed Spartan armor," as well as a new competitive gravball mode called Ricochet. The Infinity Armor Pack gives your soldier new legendary armor sets, such as the Halo: Combat Evolved Mark V armor and ODST gear, and the Steel Skin Pack brings a steampunk flavor to the Halo universe's weapons.

The Champions downloadable content includes new stances for your player card, and new armor mods: Survivor, which ejects you out of an exploding vehicle safely, and recharge, which accelerates your shield regeneration.
Here's the explanation as to what, exactly, the Ricochet game type entails:
The objective of the game type is to protect your team’s goal (a zone that is similar to a Hill in King of the Hill) while scoring in the opposing goal, either by throwing or running the ball into the goal. Running the ball into the goal earns you 50 points, while throwing the ball into the goal gets you 20 points.