Steve Jobs announced Mac OS X 10.5 “Leopard” during his World Wide Developers Conference keynote presentation yesterday.

Jobs made the announcement early in his presentation, before breaking the news that Apple would switch from IBM and Freescale PowerPC to Intel x86 processors.

According to Jobs, Leopard is due late 2006 / early 2007. This would put Leopard on track to debut right around Microsoft’s currently-stated, oft-slippng, stripped-down Longhorn release date. Yum, steak!

The release of Leopard in late 2006 / early 2007 would come during Apple’s transition to Intel processors in their Mac lines, scheduled to be completed by the end of 2007.

[UPDATE, 11:57am EDT: Clarified Leopard release timeframe.]

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