20.0: Security fixes can be found here
Per-window Private Browsing. Learn more.
New download experience. Learn more.
Ability to close hanging plugins, without the browser hanging
Continued performance improvements around common browser tasks (page loads, downloads, shutdown, etc.)
Continued implementation of draft ECMAScript 6 - clear() and Math.imul
getUserMedia implemented for web access to the user's camera and microphone (with user permission)
<canvas> now supports blend modes
Various <audio> and <video> improvements
Details button on Crash Reporter (793972)
Unity plugin doesn't display in HiDPI mode (829284)
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