from: Avsforum http://www.avsforum.com/avs-vb/showthread.php?s=&threadid=368827&perpage=20&pagenumber=8 "Two DVD players: 4D1 (DVD-1710) -(substitute for the 900) Similar to the DVD-900. No digital video or hi-res digital audio outputs. MSRP $199 - $249. 4D2 (substitute for the 1600) Probably digital video output Think of a DVD-1600 with HDMI. MSRP $299. Three universal players: 2910 (substitute for the 2200) Due September No Denon link DCDi MSRP $699 3910 (substitute for the 2900) Due out July/August 1700 series Burr Brown DACs DCDi Denon link Picture mode adjustment RS232 port Better bass management MSRP $1299 DVD-5910 (substitute for the 5900/A11) Due September MSRP $2499"