MacRumors.com

ThinkSecret claims that Apple has begun manufacturing the new "MacBook" (Intel iBook) which should be available in the next 30-60 days.

According to the rumor site, the newest version of the iBook will indeed be rebranded as a "MacBook" and will come with a 13.3" widescreen display with 1280x720 resolution.

The upcoming MacBook is said to share internal components with the recently released Mac mini which comes in both Core Solo and Core Duo configurations. The new MacBook will therefore replace both the current 12" and 14" iBooks as well as the 12" PowerBook G4. This corroborates a similar report that new iBooks were in production to be delivered by June. The iBook was last updated in July 2005.

Meanwhile, a 17" MacBook Pro with brighter display is also in the works and should arrive around the same time. The 17" MacBook Pro is said to be otherwise similar to the current 15" MacBook Pro.

Update: Meanwhile, AppleInsider claims that the upcoming MacBooks will contain a 1.67GHz Core Duo chip, and does not expect a Core Solo model. The new MacBooks are also said to contain an iSight, MagSafe Power Cord, Front Row and Photo Booth.