Sadly, the original WWDC logo was only put up on Apple's website at a resolution of 1960*1000, with the actual logo itself being less than 900 pixels square. That makes for disappointment when you scale it up to the 2048*1536 screen of the iPad. And it just so happens that there's a lot of cool color interplay in the logo, but it's just so small.
So I did what I do and rebuilt it with a combination of Adobe Illustrator and Photoshop. Attached for iPad and iPhone, here's a colorful spray based on that WWDC logo.