After examining the configuration files included in the latest build of OS X, sources at Spanish-language site Applesana.es have found references to two new MacBook Pro models.

The 10C531 build of the 10.6.2 update contained the configuration files in question. The models referenced are the MacBook Pro 6.1 and the MacBook Pro 6.1b. The current crop of MacBook Pros have a 5.(x) designation, spanning 5.1 through 5.5.

The MacBook Pro line was not updated during the latest Apple refresh, during which Apple introduced Intel's Core i5 and i7 processors to the newly redesigned iMac line.

According to the source, all indications point to two new MacBook Pros with Quad Core Mobile processors and ATI series 4500 GPUs.

The MacBook Pro line was last updated at the beginning of June at the Worldwide Developers Conference where Apple announced 17, 15, and 13 inch versions of the Pro. These models all featured Intel Core 2 Duo processors and NVIDIA GeForce 9400M and 9600M GT GPUs.

[via Apple Insider]