Mozilla Firefox Aurora 19.0a2

The Aurora channel is where users can test the latest Firefox features and innovations. Users can expect an increase in polish from the raw, cutting edge features in our nightly builds.

Aurora releases may not be as stable as beta or final releases.

Experience the newest innovations in an unstable environment that's not for the faint of heart. Provide feedback on features and performance to help determine what makes the final release.

Key Features:

- Improvements to HTML5 media elements: We’ve changed how we create threads for HTML5 media elements so that a large number of media elements can be created without overwhelming the browser. There’s added support for new media APIs to improve the overall performance of video and audio in the browser.

- Additional support for HTML5 technologies: We’ve done a lot of work in this release to add support for technologies that are in the HTML5 standard. For example, the crossorigin attribute and insertAdjacentHTML are now supported.

- WebSockets Updates: This update includes a lot of improvements to WebSockets. We updated to the latest version of the protocol and added support for new WebSockets APIs.

- HTML5 Native Right Click Menu Support: We’ve included support for an experimental HTML5 feature that lets the user add menu items to the right click menu on websites. You can learn more in the bug.

- Support for CORS for WebGL textures: Textures loaded from other domains now require the use of CORS.

- Performance Enhancements: Faster startup time on Mac, Windows, and Linux

- Improved memory management: For many users, memory use is reduced by 30 percent or more, responsiveness is enhanced

- Firefox Sync: Bookmarks and passwords now sync instantly

- Enhanced Font Rendering: Fonts are rendered clear and sharp

Users have more control in managing their add-ons (#thirdpartyaddons): After upgrading, users will receive a one-time notification with the option to review and confirm the add-ons they want to keep, disable or delete.

Additionally, Firefox will now ask user permission before installing third-party add-ons. Any third-party add-ons will be disabled by default until the user confirms the installation.

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