What a mess. In the same document Nvidia uses the D8P (Performance) codename as well as G92 for the Geforce 8800GT. It turns out that the D8M is G98, an entry level chip.
The new card is indeed a single slot design and it will need a single 2x3 power connector. It has two Dual DVI-I ports as well as HDMI and HDTV-out support. One of other important thing is that this new chip is 65nm and that the board will eat up to 110W, which is more about half of what the R600 needs.
It is a 9-inch single slot board and it looks like it will be introduced on October 29th, but this date can easily change.