They're not spinning backwards, but it's CAV (constant angular velocity), just like Sega's GD-rom format back in the day. Blu-rays and DVDs are typically CLV (constant linear velocity). CAV drives always rotate at the same RPM, no matter if they're reading data on the inside or the outside of the disk. You can therefore achieve very high transfer speeds by padding the data. Basically, you put less time critical stuff like videos or music (or even unused junk) on the inside, and the actual game assets on the outside of the disk. Voila, faster load times. Also, noise levels always stay constant no matter where the laser is positioned, and the drives are more robust.beje said:Just small DVDs spinning counterclockwise if I'm not mistaken.
I could see Nintendo keeping their Nintendo Optical Disk CAV format, but with a 405nm (Blu-ray) laser.