The launch of “Gears of War 3” on Sept. 20 is still a few weeks away, but Microsoft and Epic Games are already announcing that there’s more to come by the way of multiple game add-ons for the year’s biggest blockbuster. Revealed today, the “Gears of War 3” Season Pass entitles you to the first four installments of downloadable content that will roll out over the course of the next year, with the first releasing this November.

Adding hours of campaign and multiplayer mayhem, these game add-ons will be must-haves for any “Gears” fan, and the “Gears of War 3” Season Pass is your ticket to getting them at a discount the day they release. Available Sept. 20 for 2400 Microsoft points on Xbox LIVE Marketplace, the season pass represents a 33 percent savings versus purchasing the add-ons individually, and also includes an exclusive Liquid Metal Weapon Set.

The spectacular conclusion to one of the most celebrated sagas in video games, “Gears of War 3” has already surpassed 1.3 million pre-orders worldwide, making it the fastest pre-selling Xbox exclusive in the history of the platform. As further testament to the immense anticipation surrounding the game, 1.3 million players played more than 20 million matches in the “Gears of War 3” multiplayer beta this spring, helping refine and polish the hotly anticipated juggernaut.

Developed by acclaimed studio Epic Games, “Gears of War 3” launches worldwide on Sept. 20, 2011 (and in Japan on Sept. 22), and is available for preorder today in three distinct editions – Standard ($59.99 USD), Limited ($79.99) and Epic ($149.99). For additional details on the game, please visit gearsofwar.xbox.com.