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The Call of Duty HQ launcher update can be preloaded in preparation for theAugust 17event on all platforms.
Surprisingly enough, the specific challenge list is one of the better-kept secrets when it comes to this reveal.
The unlocks include:
The unlocked rewards will be immediately available in Modern Warfare 2 and Warzone.
The limited-time Shadow Siege event is expected to be playable for approximately one week.
