PCWorld notes that Firefox 157 introduces the Nova redesign, the browser's biggest visual overhaul in years, featuring rounded corners, subtle color gradients, and 12 unique themes with light and dark modes. A new Compact Mode helps users save screen space, making Firefox more practical for smaller displays. Mozilla also released ESR security updates fixing dozens of vulnerabilities, with older system support continuing until March 2027. Firefox 157 is out for Windows, macOS, Linux, and Android and the biggest change in this version is the new Nova design, which brings a more modern look to the browser. Mozilla has also fixed over 70 security vulnerabilities, and updates are also available for the Firefox ESR versions. The release of Firefox 158 is scheduled for October 13th, 2026.

Firefox is now looking quite different for most users after Mozilla started rolling out a redesign to everyone across desktop and mobile. The new look may not be too much of a surprise for some, though. Beta testers have been able to check it out through the Nightly version of the browser for the last few months. Mozilla says it updated Firefox's themes, icons and colors to modernize it in line with features it has added recently, such as a single off switch for generative AI tools. The redesign itself brings more features to Firefox, as well as the return of compact mode, a much-requested option that Mozilla previously nixed.

When you purchase through links in our articles, we may earn a small commission. Mozilla's latest Firefox update fixes 10 high-risk security flaws and rolls out small but useful features, from Switch Pro controller support to sortable tabs. The newest major release of Firefox 155 for Windows, macOS, Linux, and Android brings a number of improvements, including support for Nintendo Switch Pro controllers and sortable tab groups. Mozilla has also patched over 30 security vulnerabilities, and updates are also available for the ESR versions of Firefox for older systems. The release of the next major version, Firefox 156, is already scheduled for September 15th, with time for a bug-fix update on September 8th.

The latest Firefox update patches nearly 60 security vulnerabilities and adds faster video skipping, new app icons, and Nvidia game streaming support. The newest major release of Firefox 154 for Windows, macOS, Linux, and Android brings a number of usability improvements, such as game streaming with Nvidia GeForce Now, faster video skipping, and new optional app icons, as well as nearly 60 security vulnerabilities fixed. Updates are also available for the ESR versions. The next major version of Firefox 155 is scheduled for September 1st. With it, Mozilla is switching--like Google Chrome and Microsoft Edge--to a fortnightly release cycle for its major versions.

I wore the world's first HDR10 smart glasses TCL's new E Ink tablet beats the Remarkable and Kindle Anker's new charger is one of the most unique I've ever seen I wore the world's first HDR10 smart glasses TCL's new E Ink tablet beats the Remarkable and Kindle Anker's new charger is one of the most unique I've ever seen If you use AI, Firefox is the browser to beat right now - here's why Mozilla has finally released the beta of Firefox Smart Window. I ran it through its paces and found features that might lure me back to my old favorite browser. Mozilla has released Smart Window beta. This AI tool is powerful, flexible, and free. You can test it on MacOS and Windows.

PCWorld reports that Mozilla has redesigned Firefox's settings menu with clearer category groupings and an improved search function for easier navigation. The update removes the classic'General' page and reorganizes existing settings into new sections while preserving user configurations. This redesign aims to create a more intuitive experience for Firefox users seeking specific browser settings and features. Mozilla has redesigned its settings interface for its Firefox browser. The aim is to make it easier to navigate features such as privacy, AI settings, tab management, language, and appearance.

Mozilla says it patched 271 Firefox vulnerabilities thanks to Anthropic's Claude Mythos Anthropic's buzzy announcement about using AI to improve cybersecurity earlier this month was met with plenty of skepticism. However, Mozilla shared some details that support use of the company's special Claude Mythos Preview model as a way to protect critical services. Using Mythos helped Mozilla's team find and patch 271 vulnerabilities in the latest release of the Firefox browser. So far we've found no category or complexity of vulnerability that humans can find that this model can't, the foundation said. The blog post from Mozilla feels like a positive sign for Anthropic's Project Glasswing.

Mozilla Used Anthropic's Mythos to Find and Fix 271 Bugs in Firefox The Firefox team doesn't think emerging AI capabilities will upend cybersecurity long term, but they warn that software developers are likely in for a rocky transition. Amid a raging debate over the impact that new AI models will have on cybersecurity, Mozilla said on Tuesday that its Firefox 150 browser release this week includes protections for 271 vulnerabilities identified using early access to Anthropic's Mythos Preview . The Firefox team says that it has taken resources and discipline to adjust to the firehose of bugs that new AI tools can uncover, but that this big lift is necessary for the security of Mozilla's users, given that the capabilities will inevitably be in attackers' hands soon. Both Anthropic and OpenAI have announced new AI models in recent weeks that the companies say have advanced cybersecurity capabilities that could represent a turning point in how defenders--and, crucially, attackers--find vulnerabilities and misconfigurations in software systems. With this in mind, the companies have so far only done limited private releases of their new models, and both have also convened industry working groups meant to assess the advances and strategize.

PCWorld reports that Mozilla Firefox is introducing comprehensive AI Controls in its browser, allowing users to completely disable or selectively manage AI features. This development matters as other major browsers like Chrome and Edge integrate AI extensively without easy opt-out options for users. The feature debuts in Firefox Nightly builds and will reach most users within two months, with settings persisting through updates. Mozilla Firefox has always seemed like the "cool kid" browser option, for the power users who don't want to deal with Google or Microsoft. So perhaps filling it up with "AI" features -- you know, the things people are kind of tired of seeing from Google and Apple -- might not be winning people over.

Like practically every other tech company under the sun, Mozilla has been jamming generative AI features into its products . The organization has now acknowledged that not everyone wants things like chatbots in the Firefox sidebar, so it's giving you the option to turn off all of that. On February 24 (or earlier in Firefox Nightly builds), Mozilla will roll out Firefox 148, which will include an AI controls section in the desktop browser settings. From here, you'll be able to block current and future generative AI features, or only enable select tools. At the jump, you'll have the option to disable (or enable) chatbots in the sidebar, automated translations and alt text generation for PDFs.