Firefox 4 for Android and Maemo has just been released by Mozilla, bringing with it Firefox Sync for syncing data between desktop and mobile such as bookmarks, open tabs, form data, passwords and the various pros and cons browsing history can offer.
Growing up from the early alpha build, Firefox 4 has entered the beta metamorphosis for Android and Maemo phones. It includes Firefox Sync (for desktop-to-phone favourites, like Firefox Home will be); add-ons and even the Awesome Bar.