New maps, Gunfight, new Season Pass, and the usual.
Heavily armed people with gold and black armor and various tattoos aiming weapons like assault rifles and the like.

Another season of content for Call of Duty: Modern Warfare 2 is already here. Season 03 launched today for both Modern Warfare 2 and Warzone 2.0. Whichever game mode you favor will have something new or different to experience in this latest season. The full patch notes of changes and additions can be read through CallofDuty.com. A few of the highlights can be found below.

The new modes include Massive Resurgence, Gunfight, and Cranked. There are also some new multiplayer maps: Pelayo's Lighthouse and Black Gold (Core 6v6), Rohan Oil and Sattiq Cave Complex (Battle maps), and four Gunfight maps (2v2) that include Alley, Blacksite, Exhibit, and Shipment. New weapons include the FJX Imperium Sniper Rifle and the Cronen Squall Battle Rifle.

Gunfight
  • Gunfight is here with 4 maps at Season 03 launch, and new maps coming in future seasons. This iconic 2v2 mode is sure to make for high-octane moments of combat.​
Cranked
  • Cranked takes Team Deathmatch and amps up the intensity by putting a countdown on any Operator who earns an elimination. If they cannot earn another elimination before the timer hits zero, they meet an untimely explosive death.​
Massive Resurgence Launch
  • Resurgence makes its Al Mazrah debut! Prepare to take on dozens of other squads in a much larger version of this fan favorite mode.
    • How does it work?
      • When eliminated, Players enter a spectating state and must wait for the Resurgence timer to tick down. Squad members can shorten the timer by completing Contracts, looting, and eliminating enemy Players. Respawns are disabled on the fourth circle, so keep an eye on the clock
It also seems like both Alejandro and Valeria are new Operators added in this season of content. I haven't fired up the game yet and the patch notes don't specifically say that they are playable Operators, but they do say that these two have "returned to settle the score."

Those looking to get this season's Battle Pass may be interested in the new Blackcell DLC offering. This is a way for you to spend money to get access to the Battle Pass, 20 tier skips, an Operator, weapon blueprint, vehicle skin, finishing move, and 1,100 Call of Duty Points. This content is priced at $29.99 (USD) and is just an alternative to the normal Battle Pass access.

This certainly isn't everything. For that, you need to hit up the full patch notes linked above. There are a ton of changes made across the entirety of Modern Warfare 2 and Warzone 2.0 that you may want to be made aware of.