The title has it! Read the Radio World story here.
Frequent readers of DRMNA will accuse me of being a broken record on this topic, but AM HD Radio is effectively dead. DRM30 is THE alternative that can survive skywave and revive the heyday of AM-blowtorch radio. Imagine stereo signals covering a third or more of CONUS! DRM30 can do it!
With huge night skywave distances covered and good fidelity stereo, AM could be fun again (like these "radiophone dancers" in Atlanta were enjoying in May 1920). Can you imagine what Wolfman Jack would think of digital stereo coverage via DRM30?
Music on AM via DRM30 could be a revolution.