Here is a summary of the big new Firefox 138.0 update and its features, especially for Windows 11 users:
Key Features in Firefox 138.0
Profile Manager
You can now organize your browsing into multiple profiles (work, study, personal, etc..
Each profile is isolated with its own bookmarks, passwords, browsing history, and settings.
Profiles can be named and customized with avatars and color themes for easier recognition.
Quickly switch between profiles, keeping everything separate for privacy and focus.
Windows 11 Visual Improvements
Firefox now uses “acrylic” material for popup menus, better matching the modern Windows 11 UI. This means menus have a translucent, frosted-glass look, creating a more native feel.
Address Bar Improvements
For U.S. users, typing a weather-related term or city name in the address bar now gives weather suggestions/results directly in the dropdown.
Address and credit card autofill is improved, handling dynamically changing forms better — for example, filling newly revealed fields like additional address fields that appear after choosing a country.
Other Notable Fixes & Features
On macOS and Linux, you can copy links from background tabs via the tabstrip’s right-click menu.
Various security updates included.
Contrast control settings (for accessibility) are improved and separated from previous color settings.
Known Issues
There’s currently a problem importing passwords from Chrome. The workaround is to export passwords from Chrome as a CSV file, then import into Firefox.
How to Update
Go to Menu > Help > About Firefox to manually trigger the update.