Release notes: http://www.mozilla.org/en-US/firefox/15.0/releasenotes/
- Silent, background updates
- Support for SPDY networking protocol v3
- WebGL enhancements, including compressed textures for better performance
- Localization in Maithili (see all available locales)
If you do not receive an update notice when using the application, select “Check for Updates” from the Help menu.
Or download: https://www.mozilla.com/firefox/all.html