The Apple Store is taking preorders for the Apple Mac OS X 10.6 Snow Leopard Upgrade for $29 with Free Shipping, with delivery due on August 28. Sales tax is added where applicable. This upgrade is only for Mac OS X Leopard users with an Intel processor.

Apple also has a Mac OS X 10.6 Snow Leopard Family Pack, which will upgrade up to five computers, for $49 with Free Shipping. Or, get the updated Mac Box Set, with Snow Leopard, iLife ’09, and iWork ’09, for $169 with Free Shipping, required if you’re looking to upgrade from OS X 10.4 Tiger or previous.

If you bought a new or factory-refurbished Mac on or after June 8, you qualify for Mac OS X Up-to-Date. That gets you Snow Leopard for $9.95 with Free Sshipping.