NixOS/nixpkgs — pull request #4930 by taku0 (2014-11-11 01:08:03+00:00)
Title: Update firefox-bin to 33.1

Yet another Firefox 33, Firefox 33.1 aka Firefox 10 Year Anniversary Edition.
Brand new Forget Button, Enhanced “sponsored” Tiles, and DuckDuckGo search engine.
https://www.mozilla.org/en-US/firefox/33.1/releasenotes/