Source: www.janes.com
"US Air Force (USAF) and US Navy (USN) planners envisage three new air-to-air missiles intended to maintain air-combat supremacy.

Between the fielding of the new Raytheon AIM-120C-7 Advanced Medium-Range Air-to-Air Missile (AMRAAM) at the end of the decade, the services intend to develop and deploy at least two more AMRAAM variants, while an all-new missile is being studied as an eventual replacement for the AIM-120 series.

Developed under the AMRAAM Pre-Planned Product Improvement (P3I) Phase 3 programme, the AIM-120C-7 configuration retains the same motor and warhead as the current AIM-120C-5 but incorporates new commercial processors, rehosted software and enhancements in the radar signal processing chain intended to provide an increased electronic counter-countermeasures (ECCM) capability."

WHere do you get all this info?

My CIA Sources. ;)

Actually, www.janes.com