It has a similar name, specs, and design, but it has a smaller screen. The Nova is listed at 7" (800x600) while the SuperNova has an 8" (800x600) screen. Best buy didn't list the complete specs (camera resolution isn't mentioned), so I'm going to clip the SuperNova details from the other post. Chances are the details will be the same.
The SuperNova is running Android v2.3 on an 8"(600×800) capacitive screen. It comes with 4GB Flash storage, a microSD card slot, 2 cameras (3MP & 0.3MP), Wifi(n), HDMI out, USB Host, speakers, and a microphone.
Update: The nova has a resistive touchscreen, not capacitive. That makes me doubt the rest of the details.