Apple has announced an updated version of its low-end MacBook laptop, which will be available immediately.

The new model, while still clad in white polycarbonate, now features the same unibody construction and bright LED-backlit screens as Apple's other laptops, as well as the same glass multi-touch trackpad found in the MacBook Pro line.

The new 13.3-inch MacBook bears the same £799 price as the old model, but is powered by a 2.26GHz processor. It also features 2GB of 1066MHz RAM, a NVIDIA GeForce 9400M graphics chip, and a 250GB hard drive.

Apple MacBook 2009

This new MacBook has a familiar look, but it's thinner, with curved edges. Like Apple's other MacBooks, it's got a self-contained, non-swappable battery.

As a result, the bottom of the laptop has no feet--instead, the entire bottom surface is rubberized, save for eight screws.

Also announced by Apple today: a new range of of iMac all-in-one PCs, replacing the old 20in and 24in models with new 21.5in and supersize 27in models featuring a true widescreen 16:9 aspect ratio and impressive high-end features previously found only in the Mac Pro line, including the first quad-core processor to feature in an iMac.

Also announced by Apple today: a new multi-touch mouse, the Apple Magic Mouse.