Mozilla Exec: Firefox 4 Will Arrive in February
pcworld.com
pcworld.com
http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/lates...
You'll get daily updates - but it'll /nag/ you until you do :)
I use chrome now because it starts up fast and I have all the things I like, if firefox started up faster and had similar window freedom (last I checked linux wasn't as lucky as windows) I would switch back. The update thing was just a nitpick that if I could see changes happening over time rather than one huge update it would entice me back.