Latest nightly build of Firefox features a new refreshed default home page. The new layout enables users to access bookmarks, history, add-on manager, download manager and settings window easily. The nightly channel also gets a new shiny icon.
There are many other features added to the Firefox 14 like smooth scrolling based on “SmoothWheel” algorithm (Bug 206438), which was pending for long time. The SmoothWheel is already available as an add-on for Firefox & other Mozilla-based products, and scrolls the page smoothly (see this video).