I will roll my eyes SO HARD at all the Apple rumor sites. With the iPhone, Apple proved that they can defeat rumor people by showing off demo units and prototypes to many different people. The conflicting rumors will increase buzz and increase surprise at the same time, even if some of the rumors were legit.
A while ago, an Apple patent surfaced for an ultra low-profile optical drive underneath the keyboard that requires sleeping the laptop, turning it over, and changing optical discs while it is upside down.
Since then, rumors have been about laptops with no optical drive, and now recently there's a rumor about an external optical drive. This ignores the fact that leakers could look right at a device with the upside down optical, and think that it has no internal optical drive.