Just got my copy of Home Theater magazine over the weekend. It a special AV receiver issue that contains a AV receiver buyers guide. In that guide they show specs and prices for the three new Sony ES receivers plus a new model for their lower end models.
STR-DA5600ES - 130x7, HDMI - 2 Out and 6 In -1.4 spec, 5 optical inputs, HATS, RS232, Ethernet Switch, No USB, No S-Video, 17x7x17, 39 pounds (MSRP, $1999)
STR-DA4600ES - 120x7, HDMI - 2 Out and 4 In -1.4 spec, 3 optical inputs, RS232, Ethernet Switch, No USB, No S-Video, 17.7x6.25x15.38, 35 pounds (MSRP, $1499)
STR-DA3600ES - 105x7, HDMI - 1 Out and 4 In -1.4 spec, 3 optical inputs, RS232, Ethernet Switch, No USB, No S-Video, 17.7x6.25x15.38, 35 pounds (MSRP, $1099)
STR-DN2010 - 100x7, HDMI - 1 Out and 4 In -1.4 spec, 3 optical inputs, Ethernet Switch, No USB, No S-Video, 17.7x6.25x12.88, N/A pounds (MSRP, $799)