Is this another thread for complaining about procurement? Or are we gonna talk about cool missiles! starts "Missiles, Missiles, Missiles" chant
Is this a hypersonic cruise missile or is it a hypersonic ballistic missile?
If it's a cruise missile (looks like one and I don't think Oz is interested in ballistic missiles) what I want to know is if the US has solved the sub 50,000 ft problem. Hypersonic missiles normally can't work any better than a supersonic missile below that height because air friction will either destroy them or cause them to be completely unable to run targeting systems (the plasma buildup essentially blinds them).
If they haven't solved that problem then this missile can get to the target area really fast and then has to drop down to supersonic speeds (still very fast) to hit the target. 5x the speed of sound is generally accepted where the barrier between hypersonic and supersonic is. There are modern AAW systems out there that can target and shoot down a supersonic missile.
Using such a fast missile would be a big change from the current NATO philosophy of missiles. Normally our anti ship missiles and cruise missiles go slow and stealthy, whereas China/India/Russia are all about the very fast dare you to shoot me down way.