Rumors have been going around recently after website Switch to a Mac speculated that new Apple MacBook and MacBook Pro models should be revealed soon. Some say there's nothing more to it than old tricks of predicting Apple releases, while others believe the idea is feasible.

According to observations, Apple updated the MacBook twice since its May 16, 2006 release with an average of 182 days interval between revisions, so expecting a new Macbook around November 6 would sound like a good bet. If that date is right on the money, the average will remain at 182 days.

However, predictions for a new MacBook Pro also factor in. Apple updated the MacBook Pro for three times since its June 10, 2006 release with 170 days in-between, making November 13 the ideal date. In case this actually happens, the MacBook is expected to get a new model about three weeks earlier.

To further support the wild guess for revised MacBook models, Switch to a Mac added:

Apple's new Leopard operating system has revealed drivers for the Intel GMA X3100 integrated graphics chip, a successor to the Intel GMA 950 which is used in current MacBooks. This finding would imply that the next MacBook revision may be upgraded to the Santa Rosa chipset and that a MacBook revision is imminent.