Also included in the update is an optimized experience for certain touchscreen devices used in the United States. Devices include iPhone, Zune HD, T-Mobile G1, Verizon Imagio, and Samsung Omnia. Additional devices will be added in the future.
The navigation is improved and visual search for movies has been implemented. This might be a rolling update because my iPhone didn't show the updated results shown in the blog. The movie search is still very nice on my iPhone, just not what I saw on the Bing blog. Here's two screenshots. The first one is from the Bing blog, the second one from my iPhone.