Intermittent Explosive Disorder (IED) is far from "new." It's an official psychiatric diagnosis in the Diagnostic and Statistical Manual (DSM), the diagnostic guide that all psychiatrists and psychologists use regularly. It has been listed under that name since DSM version III (1980). Sorry you don't like the abbreviation (presumably because you think it was stolen from "Improvised Explosive Device" used in the military?). I don't know for sure that the disorder wasn't named as a tongue-in-cheek nod to military IEDs, but based on the humor of the shrinks I know, probably not; I think it's probably a coincidence.
Whether the acronym is a good one or not, this research is interesting- and shows the cluster of symptoms is much more common than originally thought. For more info, you can also see a research article by Emily Coccaro MD in The American Journal of Psychiatry (2012, published online in April).