Changes to the web browser's tabs mean users now see recently visited sites whenever they open up a new one, combined with highlights from previous web visits. Mozilla says this change in particular will be rolled out to users gradually over the next few weeks.
As for the new Night Mode, this refers to a web page brightness dimming feature for easier reading in dark environments, rather than a darkened interface as such.
Version 8.0 of the browser also introduces Feature Recommendations, which are basically hints and time-saving tips to help users improve their Firefox experience. In addition, it's also now possible to send a web page or tab to another Firefox-synced device, across both desktop and mobile devices.
Other smaller tweaks to the app include yMail as one of the supported email clients, the password manager now has improved login page detection, and when users copy a link Firefox will now prompt them to open it, rather than having to paste it in manually.
Firefox 8.0 web browser is a free download for iPhone and iPad available on the App Store. [Direct Link]