SF’s large Mac enthusiast population will be busy downloading & installing this weekend’s latest marching orders from their turtlenecked cult leader Steve Jobs…

Leopard, for those not prone to follow upgrade lingo, is the new $129 operating system upgrade from Apple’s Cupertino HQ.

First released as a beta to attendees at Apple’s World Wide Developer Conference at Moscone in June, the long delayed Leopard is now considered street worthy and fit for 64 bit multi-core Intel processors.

Ipod users and Iphone abusers are eagerly anticipating trying out their new wet grassy default wallpaper and 300 some quirky features & improvements. Top touts include stuff like Time Machine, Automator, Spaces, Docking With Stacks, Cover Flow file views and other geektastic gizmos built into the fresh code for the Mac platform.

Here’s a link to a guided tour.