The all-in-one desktop computers have a slimmer design and glossy screens encased in elegant and professional aluminum and glass enclosures. Apple decided to replace the plastic cases and has also used aluminum for the new, ultra-thin Apple Keyboard.

"Two elements we've used in a lot of pro products: aluminum and glass. Phenomenal materials. Take aluminum, we use this in our pro products. Professionals love it. Glass, very elegant", explained Steve Jobs during his speech.

But the fancy aspect is not the only novelty. Apple eliminated the 17-inch display and the new iMacs will be shipped as 20-inch and 24-inch versions. Also, the Cupertino company has slashed the prices.

As Steve Jobs said the 20-inch iMac now starts at just $1,199, $300 less than the previous 20-inch model, and the 24-inch iMac starts at just $1,799, $200 less than the previous 24-inch model.

The new iMacs includes the latest Intel Core 2 Duo processors running up to 2.8 GHz with 4MB of shared L2 cache and up to 4GB of 667 MHz DDR2 SDRAM memory.

As the graphic solution, Apple offers two options: the ATI Radeon HD 2600 PRO with 256MB of GDDR3 memory and the ATI Radeon HD 2400 XT with 128MB of GDDR3 memory.

Also, as we live in a digital entertainment era, Apple packed inside its new iMacs up to 1TB of internal storage, which should be enough (for the moment) for any library of movies, digital photos or music.

The iMac include also numerous connectivity options. A total of five USB 2.0 ports (including two on the new Apple Keyboard), one FireWire 400, one FireWire 800 port and also a built-in AirPort Extreme 802.11n WiFi networking.

Of course, every iMac is delivered with iLife ’08 and Mac OS X version 10.4.10 Tiger which includes Safari, Mail, iCal, iChat AV, Front Row and Photo Booth.

"This new iMac is the most incredible desktop computer we have ever made," said Apple chief executive Steve Jobs.

Last month, Apple reported astonishing results for the last quarter. Sales of iPod music players and Macintosh computers spurred Apple's revenue for the April to June quarter to 5.41 billion dollars, compared to 4.37 billion dollars for the same period in 2006.

Apple said that it sold 1.76 million Macintosh computers during the quarter -- reaching an all-time high for Mac sales in one quarter -- and up 33% from a year ago. Mac sales included 1.13 million MacBook and MacBook Pro notebook PCs and 634,000 desktop Macs. Profits for the quarter were up 73 per cent year on year, to 818 million dollars from 472 million dollars.