Kasper Jade of AppleInsider is claiming that Apple’s MacBook is on the verge of a redesign.

People familiar with Cupertino-based company’s plans say the 13-inch portables are presently undergoing an industrial design overhaul that will see them reemerge in the coming months with a slimmer, lighter enclosure and restructured internal architecture to boot.

Ever since Apple repositioned its aluminum MacBooks as MacBook Pros I’ve thought the MacBook felt a little lonely. It’s only natural to assume that Apple would expand their MacBook offerings. Up until now this thought only came from idle speculation but now there is at least someone with a source indicating that it could be true.

Kasper Jade goes on to point out that, with the addition of the tablet and the expansion of the MacBook offerings, Apple will have a top-to-bottom line of products. In the second quarter of next year Apple will offer a device at every major price point and this will undeniably make the lives of PC manufacturers a little more difficult.

Update 9/16/09: Wedge Partners Claims Apple is Redesigning the iMac and MacBook

Update 10/20/09: Mac mini with OS X Server and Multi-Touch Trackpad for Desktop Macs

Update 10/20/09: Apple Updates MacBook with LED-Backlight, Glass Trackpad, 7 Hour Battery