Apple have just posted its guided tour for the new MacBook Air, and it’s definetly worth a look if you’re considering purchasing the upgrade.

Check it out here.

There’s also a new MacBook Air TV Ad that can be viewed by clicking right here.

It’s been rumored about for months, and finally, Apple has announced a new line of portable computers during Steve Jobs’ keynote speech at MacWorld San Fransisco today. The MacBook Air is Apple’s new laptop which is now a part of the MacBook and MacBook Pro family.

Features of the new portable include being “the world’s thinnest notebook,” at 0.16 inches to 0.76 inches, a new LED backlit 13.3″ widescreen with a magnetic latch. The MacBook Air keyboard is MacBook-like, but with an ambient light sensor. The new machines feature a multi-touch trackpad, allowing the user to double-tap and move. Rotate a photo by pivoting your index finger around your thumb, as well as pinch & zoom.

Mac Rumors has also stated that additionally there’s a 45 Watt MagSafe power adapter, a Micro-DVI out as well as Audio Out, 802.11n + Bluetooth 2.1/EDR. There’s a 1.8″ hard drive for storage - either 80GB standard, or a 64GB SSD as an option. Intel shrunk the size of the Core 2 Duo chip by 60% to fit in the new machine.

The Battery life is approximately 5 hours. No optical drive is on the MacBook Air, but a SuperDrive accessory is available for $99US. There’s also new software being released that allows the portable to “borrow” a Mac or PC’s optical drive, which is sure to make some heads turn. All models feature 2GB of memory standard.

The case is fully aluminum, the first fully mercury and lead free display, circuit boards are BFR free, and retail packaging are 56% less volume than a MacBook.

The new MacBook Air starts at $1799US (1.6GHz model) is available for pre-order today, and is expected to be shipping in two weeks. Additionaly, Apple have released a 1.8GHz model for $3098US.

Just today Apple have made a quiet update of the MacBook and MacBook Pro.

This via Macrumors

As rumored, Apple has quietly updated the MacBook tonight to the Santa Rosa architecture with mild speed bumps and the GMA X3100 integrated video.

White 13.3″
$1099.00 2.0GHz/1GB RAM/80GB/Combo/GMA X3100
$1299.00 2.2GHz/1GB RAM/120GB/SD-DL/GMA X3100

Black 13.3″
$1499.00 2.2GHz/1GB RAM/160GB/SD-DL/GMA X3100

Despite comparable clock speeds (2.0 -> 2.0GHz, 2.16 -> 2.2GHz) to the old models, the new MacBooks use the Santa Rosa chipset which boasts a faster 800MHz front side bus over the previous MacBook models. The introduction of the GMA X3100 video card also provides significant benefits over the previous models.

The new specs can now be seen at the Apple Store:

Along with this, apparently MacBooks have already been shipped to Apple Stores, and should be arriving today.

UPDATE 1: This hasn’t been modified on many of the online stores, including the Australian Apple website.

UPDATE 2: The MacBook Pro now has the option to upgrade to a 2.6GHz processor for $250, and also has the option for a 250GB drive.