Apple is offering customers that recently purchased a new Mac a way to upgrade to the newest version of Mac OS X for $9.95.

The Mac OS X Snow Leopard Up-to-Date Program gives users that purchased a qualifying computer on or after June 8, 2009, a bit of price protection. The program ends on December 26, 2009.

Qualifying Mac includes the iMac, Mac mini, Mac Pro, MacBook, MacBook Pro and MacBook Air. A few list of qualifying computers and model numbers are available from Apple’s Web site.

According to Apple, in order to receive your Mac OS X v10.6 Snow Leopard upgrade, you must complete the order form and provide a photocopy of a dated, itemized sales receipt indicating the marketing part number of the qualifying product purchased. Order acknowledgments, packing slips and purchase order copies are not valid.

Amazon on Saturday began offering pre-orders for Mac OS X client and server versions of the new operating system. The regular price to upgrade from Leopard is $29.

More information on the program is available from Apple’s Web site.