Mozilla's firefox web browser has undergone a significant update, reportedly its largest in 13 years, although some outlets suggest it has been 6 years since the last major redesign. The update, referred to as Project Nova, is said to include various new features and improvements, including a redesign and potentially a built-in vpn and split view. The exact nature and extent of the changes are unclear, with some outlets focusing on design and feature updates, while others mention cybersecurity enhancements or express negative sentiments towards the browser.