Apple Computer updated its thin-is-in iMac desktop line with the latest version of its Mac OS X “Tiger” operating system, speedier processors and enhanced wireless networking. The slender, all-in-one computer, introduced last August at Apple Expo in Paris, has helped Apple gain share in the global desktop market.(Indeed, First Albany Capital reports that only Apple and Dell made worldwide gains in the first quarter.)

This latest announcement is just an attempt by Apple to keep its glamor model fresh. It introduced three new versions of the iMac G5: a model with a 20-inch widescreen LCD, a 2.0 Gigahertz 64-bit PowerPC G5 processor and other goodies for $1,799; a 17-inch LCD screen with 2.0 Gigahertz PowerPC G5 processor for $1,499 and a 17-inch LCD screen with 1.8 gigahertz PowerPC G5 processor for $1,299. All the new iMacs include faster graphics, a new SuperDrive for authoring double-layer discs and built-in AirPort Extreme and Bluetooth wireless networking.

For full details, check out Apple’s web site.