I found this information at this year NAB convention product listing.
Name: NAGRA SD
Description: A hand held audio recorder, extractable SD memory card storage. Records PCM linear audio or MPEG compressed. Equipped with exceptional microphone preamps housed in a sturdy aluminum case, produces high quality audio recording in hostile environments.
Details: The Nagra SD is a hand-held digital audio recorder, packed with features, menu driven(?), and housed in a sturdy aluminum case. It uses a selection of different plug-on Nagra microphones or an XLR cable for an external dynamic microphone or line input. Audio storage media is an extractable SD memory card. Records PCM linear audio (24 kHz to 96 kHz) or MPEG compressed audio. Other features include 3 second pre-record buffer, USB 2.0 communications.
Based on this brief description it seems to be something similar to Ares M and P series. Something which can use plug-on mics or an external dynamic mic < does that really mean that it will not power condenser(s)?
Of course I sent out some email to the people at Nagra USA and to my contact at Nagra Switzerland to inquire more information if possible.
Tonis