Mozilla has released a new major version of its browser, Firefox 18.0, for Mac OS X, Linux, and Windows. In addition to fixing 21 identified security vulnerabilities (of which 12 are rated Critical), the new version incorporates some additional features:
- Support for Retina displays under OS X 10.7 and up
- Preliminary support for WebRTC
- Better scaling of images in HTML
- Better performance in tab switching
Further details on the updates are available in the Release Notes.
Because of the security fixes incorporated in this release, I recommend that you update your systems as soon as you conveniently can. You can get the new version using the update mechanism built into the browser, either automatically or via Help / About Firefox / Check for Updates. Alternatively, you can get a complete installation package, available in more the 70 languages, from the download page.
Update Tuesday, 8 January, 21:45 EST
Ars Technica also has an article on the new version.