Next week is a great week to get back into Halo Infinite, as Season 3: Echoes Within starts and introduces a lot of new content. The by far most important things are the three maps; Chasm and Cliffhanger (Arena), and finally Oasis (Big Team Battle).
Here is how these are described by 343 Industries' Multiplayer Level Designer Cliff Schuldt, on Halo Waypoint:
Chasm is what you'd get if you took Boarding Action from Halo: CE and put in some Grappleshots, which is every bit as fun as it sounds.
Cliffhanger is set at an ONI black site atop a mountain, also featuring man cannons for maximum vertigo!
Oasis is a mosh pit of pure vehicular fun for BTB, and it's got a stunning skybox with a Forerunner ship terraforming the desert environment around it.
Now we've got a preview trailer as well showing these off. Besides new maps, Echoes Within also adds Escalation Slayer and other things, and starts on March 7.