Just published on Flight Global - (you wait ages for an update and then two come along together...)
Snip:-
The US Air Force has selected Lockheed Martin to rapidly develop and field both new hypersonic missiles launched as a response to surprise developments in high-speed weapons by China and Russia, newly-released acquisition documents confirm.
The service already announced a $928 million award in April deal for Lockheed’s Missiles and Space company to develop the Hypersonic Conventional Strike Weapon (HCSW, pronounced “Hacksaw”, an air-ingesting missile capable of speeds in the single-digit Mach number scale. But a new document reveals that the USAF awarded a separate deal to Lockheed’s Missiles and Fire Control division in July 2017 to rapidly develop and field the Air-launched Rapid Response Weapon (ARRW, pronounced “Arrow”). The ARRW, now assigned the designation AGM-183A, evolves from the Tactical Boost Glide (TBG) programme launched in 2014 by the Defense Advanced Research Projects Agency (DARPA). By using a rocket to boost the missile to very high altitudes, the unpowered ARRW then glides down to lower altitudes at speeds up to Mach 20.