Apple launched a new fresh look to their home page, which replaced all of the existing pages with an updated UI and HTML5. There's some subtle animation (try clicking on the Mac or iPod tabs), a new, darker nav bar, and a slight gradient to the background. The new darker colours include a new magically-expanding search field that shows suggested results as you type.
Another noticeable improvement is the product slider. Apple has since ditched the horizontal slider bar and replaced it with animated tabs. This new animation can been seen on the Mac and iPod, and the iTunes tab now includes a new transition in page loading.
In the performance area, the new website feels faster. The website even uses HTML5 video to display their product promotional videos.