<ul><li>Firefox 139.0 release includes new features like link previews, custom wallpaper for new tabs, and full-page translations extension support.</li><li>The link preview feature allows users to preview link pages with AI-generated key points by hovering over links and pressing Alt+Shift.</li><li>Users can now customize new tab backgrounds by uploading custom images or selecting colors using color picker in Firefox 139.0.</li><li>Other changes in this release include updates to Review Checker feature, Temporal proposal, improved performance, security fixes, and more.</li></ul>

Firefox 139.0 Added Link Preview & Custom Wallpaper for New Tabs

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