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"Apple on Monday offered attendees at its annual developer conference an overview of its nearly finalized Mac OS X 10.6 Snow Leopard operating system, which the company said will be available in September as a $29 upgrade for users of Mac OS X 10.5 Leopard."^^<http://www.w3.org/2001/XMLSchema#string>
<http://appleinsider.com/articles/09/06/08/apples_mac_os_x_10_6_snow_leopard_to_retail_for_29_in_september>