Mozilla is set to land the new HomeTab UI for Firefox 13 due out on June 5th, 2012. This feature was originally planned for Firefox 5. but has undergone major changes (and name changes). Unlike the similar feature in Google Chrome there will only be one page (Chrome allows you to scroll between two ‘pages’). This feature is NOT currently in Firefox 13 Beta, but should be landing in the an upcoming weekly Beta update. Below is what the current mock-up looks like and might change slightly before this is released to the wild in Firefox 13:

Source: Tom’s Hardware