It was a release candidate just about a week ago and today it's all ready to go. Firefox 4 for Android has just been released from the Mozilla labs and is now prowling the mobile internet. You can get yours at the Android Market, in no less than 10 languages, though there'll be no Flash playback. Still, tabbed browsing, extreme customizability, and bookmark / tab / history coordination between desktop and mobile (via Firefox Sync) are all nice to have, as is the promised threefold improvement in speed over the stock Android browser. Pretty nice list of improvements for some freebie software, wouldn't you say?