Interesting. Just read the Japanese press release and early articles on it. Seems it's not just targeting desktop use, but rather flexible use. In which case I wonder whether a compact compact disc player may also appear at some stage. Tuned with B&W speakers, especially speakers like the CM1s2 with a compact system in mind. They seem to think that although the form factor might make consumers assume use as a desktop system it performs way beyond that. In one Marantz demo photo they had it paired with CM9s2, although there was no description of how this pairing worked.
Personally I'd still place it in the NAD 3020D class in terms of how I'd use it.