By Kasper Jade

Published: 07:00 PM EST

Confirming previous reports, sources with an unblemished track record tell AppleInsider that Apple is preparing to announce new versions of its consumer iBook and professional-grade PowerBook next week.

In all, the company is expected to debut 8 new laptop configurations. Two new 12-inch PowerBooks will reportedly carry model numbers 'M9183LL/A' and 'M9184LL/A', while revised 15-inch models are being referenced by model numbers 'M9422LL/A' and 'M9421LL/A.' A single high-end 17-inch PowerBook G4 configuration is referenced by sources as 'M9462LL/A.'

In addition, Apple will also refresh its fast selling iBook product line. Two new 14-inch configurations are listed by sources as 'M9418LL/A' and 'M9419LL/A.' Meanwhile, a single 12-inch configuration is said to carry model number 'M9426LL/A.'

According to sources, Apple is expected to announce the new portables simultaneously next week. All models are said to feature faster G4 processors and improved graphics capabilities.

Update
In reference to the previously published announcement date, sources have noted that while certain parties may be able to order the new portables on Monday the 19th, Apple may not announce the products officially until the following day (Tuesday the 20th).