Btw that Video does mention that the missile shown switched to laser guidance under strong Electronic interference order reacquire target .(overcoming ECW seem to be a common part of PLA aviation exercises)Also, the impression of yankee suggests he believes the new missile should have more advanced guidance (such as dual mode MWW and ImIR) rather than only MMW guidance. The missile in the video appears like it can only have MMW guidance.
Other than that, the missile shown is definitely not the rumoured long range agm, it’s the same dimension as the other atgm and if you seen spike NCLOS used on the Apache, you’ll notice it’s significantly larger than hellfire.