One innovation will apparently be a tighter integration of the search function with the browser’s bookmarking tool to provide more relevant search results. The browser is also set to get more powerful offline features to buffer against patchy internet connectivity on the go.

These targeted improvements reflect the fact that search is the “number one activity” when people seek information online. The enhanced offline capability also mirrors the rise of Web Applications that can retain their functionality even if continuous internet connection is not possible.

You can find more details of the planned new features for Firefox 3 here.