Amped news is reporting that an inside source has confirmed the existence of Call of Duty 4. What is more, the source claims that Call of Duty 4 will forgo the World War II setting in favor of more modern warfare. Many are speculating that Call of Duty will shift its focus to the Middle East, as EA did with its Battlefield series. This would seem to confirm a similar rumor reported by Joystiq way back in March.

Development of the 4th installment of Call of Duty will be handed back to its original developer, Infinity Ward. Call of Duty 4 will also mark the series' return to the PC. According to the source, a deal has been made with Activision regarding future titles. Supposedly, Infinity Ward will now handle the development of all even numbered COD games, and Treyarch will develop all odd numbered COD titles. If true, this maneuver was probably executed to decrease the gap between sequels, though it will be interesting to note the future differences between Infinity Ward's and Treyarch's entries. Also worth noting, Call of Duty 4 is reported to have many technical improvements, including 16 critical points mapped to the head of each character. This allows for very detailed hit detection -- for example, shooting at the side of the head will tear off an ear or make a soldier's helmet spin. Finally, multiplayer is rumored to support 54 players.

[Via Joystiq]