XULRunner 1.8.0.4 Security and Stability Update
The XULRunner 1.8.0.4 security and stability update is now available. This release is a stable developer preview of the Mozilla XULRunner application framework. The underlying gecko engine of XULRunner 1.8.0.4 matches Firefox 1.5.0.4. All existing users are encouraged to upgrade. Please read the release notes for further information.
In addition, while preparing this release of XULRunner the build team released an official Gecko SDK for XPCOM component development. For more information about the SDK, see the documentation.