WWDC 2007's Keynote just ended. What many people may not know was that the keynote was part of Apple's goal to become a greener company.

An example? Here's the list of the "10 new Leopard features" from last year's keynote:

• 64 bit
• Time Machine
• "Complete Package" (Photo booth / Front Row / Boot Camp)
• Spaces
• Spotlight
• Core Animation
• Universal Access
• Mail.app
• Dashboard
• iChat

This year, there was another list of 10 new features.

• New Desktop
• New Finder
• Quick Look
• 64 bit
• Core Animation
• Boot Camp
• Spaces
• Dashboard
• iChat
• Time Machine

Depending on your view ("Boot Camp" was a part of the "Complete Package" feature; Quick Look is/was a part of Time Machine), you'll see that 60-80% of this year's Leopard demo was recycled.

Who would've thought Apple would go green so quickly?