Microsoft has collaborated with Mozilla to offer a special edition of Firefox web browser that comes loaded with Bing as the primary search engine.
This is not the official Firefox release which continues to feature Google search by default.
This special edition is being offered by Mozilla but through a Microsoft website.
This could be a solid indicating that Mozilla might switch from Google to Bing in the near future as their default search engine.
Their search deal with Google is expiring soon and analysts believe that Microsoft would probably offer Mozilla a lot more money to make Bing the default search engine in Firefox.