As you know in Modern Warfare 3, when you prestige, you'll unlock the all new Prestige Shop. This new shop allows you to control how you're rewarded for prestiging by using Prestige Tokens earned each prestige to unlock rewards like 2 Hours of in-game Double XP, an extra Create-a-Class slot, carrying over one item from Custom Class with you through future prestiges, and more.

So this weekend, starting at 10AM on Friday and going until 10AM on Tuesday, They're turning on Double XP on Modern Warfare 2 and Black Ops to give you the opportunity to rank up and get to that first prestige.