UPDATE 20120508: I have news that the DRM broadcasts are still on the table and have been "delayed until August".
Our colleague Brendan just emailed me and noted a nice analogue signal on 19000kHz between 0100 and 0300 UTC from Radio Australia. Looks like it is occupying about 10kHz. Hmmm, might this be a sign DRM is on the way? Nice signal here in the NW of NA!