Apple unveiled its ultraportable MacBook Air, the world's thinnest notebook according to CEO Steve Jobs, during his keynote speech at Macworld 2008. Here's our first look video and review.

With Macworld kicking off today, that tangled web of rumor, innuendo, and outright fabrication known as the Internet has been abuzz with all kinds of supposedly inside top-secret documentation, downloaded directly from Steve Jobs' frontal lobe.

Naturally, we didn't believe a word of any of the oh-so-fake "leaked" Steve Jobs keynote addresses and product spec sheets, but one area where most of the speculators were at least partially right was in Apple's latest laptop, the MacBook Air.

As was heavily predicted, the new laptop is not quite an ultraportable, but still very small. Mimicking the 13.3-inch silhouette of the current MacBook line, it's less than 20mm thick at its thickest part. Apple calls it the "world's thinnest notebook."

The MacBook Air includes the usual iSight camera, plus what looks like a fairly standard Mac-like keyboard, an LED backlit display, an ambient light sensor, and a big touchpad that works with multitouch gestures, such as rotating a photo by twisting your fingers on the touchpad.

There's no firewire and and only one USB port -- so without a USB hub things will get a little sticky for connectability. The battery is also non-replaceable, something which is sure to irk those who've fallen foul of a dead iPod.

As for what's inside this slim laptop, we're looking at a 1.6GHz or 1.8GHz Intel Core 2 Duo CPU, custom-made by Intel to fit into the slim chassis, 2GB of RAM, and a choice of either an 80GB standard 1.8-inch hard drive or a 64GB SSD drive (which really should be standard for something so forward-looking). Bluetooth and 802.11n were expected, but the lack of an optical drive is a surprise -- it's a smart space and power saving move we expect to see in more ultraportable laptops. External drives will work, and the Air can connect wirelessly to an optical drive in another nearby computer.

The MacBook Air is available for preorder now, and it ships in February, with base prices of AU$2,499 for the 1.6GHz model, and AU$4,338 for the 1.8GHz model with 64GB SSD.

The hype was already huge preshow, so it's hard to say if anything could really live up to it, but this seems, at first glance, like a solid addition to the MacBook lineup. We'll have to keep waiting for a true ultraportable, something missing from the Apple lineup for several years.