Check it out. Activision comes through. Did you find yourself ticked off by your Mono Experience known as Guitar Hero III for the Wii? Did you fill out the pre-claim form on Activision's Website? If you did, start checking your mail. You might be getting the above form and a prepaid, address envelope in the mail. Send in the disc and the form (click the above image to see it in its full glory) and you'll have a not so mono experience in 3-4 weeks.
Have not yet filed a claim? Do so here. Kudos to Activision for staying true to their word.