The DBP-1611UD is slated for a June release at a suggested $399.  It's the less feature packed of the two new players, but it's still got plenty to offer.  You can stream audio and video files from your PC, for example, and watch Netflix and YouTube if you're plugged in to the internet.  The 1611UD also sports an HDMI 1.4 output for 3D video.

Both of Denon's new players are 3D capable, but they won't play back 3D Blu-ray discs until this fall when they get a firmware update.  Chances are you won't have too many 3D Blu-rays by then anyway, so it's really a non-issue.

Denon's higher end player, the DBP-2011UDCI, is aimed towards the custom installer market.  It's slated for August and carries a suggested price of $799.  It does everything the 1611UD does, but adds an Anchor Bay decoding engine and scalar.  It's also got new Burr-Brown 32-Bit, 192-kHz Audio DACs.