Microsoft today announced that preorders for Halo 3 in North America have exceeded the 1 million milestone, retailers noticing that the presales for Halo 3 are the fastest in video game history. In addition, Microsoft unveiled the first details of upcoming promotions from leading consumer brands, including Mountain Dew, 7-Eleven, Pontiac, Comcast and Burger King Corp. There are rumors that limited edition Mountain Dew will offer chances to win an RC Warthog, a replica energy sword, and even a car. Check the press release for details.