Upon its initial deployment during the first part of November, Activision and Infinity Ward’s Call of Duty 4: Modern Warfare has been peerless in the sales charts, wresting control of the top slot away from Microsoft and Bungie’s Halo 3 and never looking back. With Activision claiming the crown of best-selling game of 2007 for COD4, the publisher will be stop-lossing the modern-day shooter for another tour with Call of Duty 4: Modern Warfare - Game of the Year Edition, scheduled for release for the Xbox 360 on April 3.

As noted by leaks from UK news outlets earlier this week, COD4: GOTYE won’t include any new or upgraded features. However, it will come packed in with a redeemable token for the Modern Warfare Variety Map Pack, which will add four new multiplayer maps to the game’s lauded online component. The four new player areas are: Creek, an open village area; Broadcast, a close-quarters in-door environment; Killhouse, an abandoned warehouse; and Chinatown, a low-lit map set in the not-so-war-torn city of San Francisco. Those who already own the game will also be able to purchase the map pack on April 3 through Xbox Live for 800 Microsoft points ($10).

In anticipation of the map pack’s debut on Xbox Live, GameStop will be hosting a live, preview event at two locations in New York City and San Jose. To the first 100 attendees will go a free token to download the Variety Map Pack, and the first 250 people to arrive will have a chance to compete for various prizes, including GameStop gift certificates.

Activision did not indicate whether the COD4: GOTYE rerelease or the Variety Map Pack would also arrive for the PlayStation 3 or PC, and had not responded to requests for comment as of press time. However, Infinity Ward did say on its official Web site for the game in February that the then unnamed map pack would be available for XBL and the PlayStation Network this spring.