Torch Mobile, the makers behind the Iris Browser, updated the WebKit-based Windows Mobile browser. The new browser, which is up to version 1.1.5 now, offers a number of improvements, according to WMPowerUser, including:
-Noticeably faster scrolling
-Up to 25% improvement in page load time
-Improvements to text input
-Rendering and layout improvements
Looks like it even has a cover-flow interface for webpages.
You can download the new version from Torch Mobile.