There are some limitations to this player, as discussed on AVSForum.com (the US equivalent of this site). Some of them are:
1) No internal DTS-HD and Dolby TrueHD decoders. As a result, you won't be able to use the 5.1 analogue RCA jacks for DTS-HD. This datastream is only available via HDMI.
2) No HD video via the component outputs. Only available via HDMI.
3) Regular DTS bitstream can be output over coax.
$1800 for this?!

No thanks. I'll wait for a Blu-Ray player that can do the internal decoding of the audio before buying. Sony's players sound more interesting than this Pioneer.