A new version of the Firefox Web browser is scheduled for release Tuesday with improvements in security, speed and design.

Many of the enhancements in Firefox 3 involve bookmarks. The new version lets Web surfers add keywords, or tags, to sort bookmarks by topic. A new “Places” feature lets users quickly access sites they recently bookmarked or tagged and pages they visit frequently but haven’t bookmarked.

There’s also a new star button for easily adding sites to your bookmark list - similar to what’s already available on Microsoft Corp.’s Internet Explorer 7 browser.

Other new features include the ability to resume downloads midway if the connection is interrupted and an updated password manager that doesn’t disrupt the log-in process.