The PCM-D1 records 24 bit / 96KHz PCM audio onto built-in 4GB flash memory or one of Sony's proprietary Memory Stick Pro cards. But strangely it's got odd analog level meters (which look weakest just where you need them most: at the top of the range) and a built-in pair of condenser microphones that make the device look like some sort of tricorder. Sony says these are in X-Y configuration but the mic caps are not coincident.
Another bizarre choice is a high pass filter at 200Hz. What use is that?
It is to be launched at the end of the year and costs US$2000. Ouch!