This long-awaited project replaces the aging LLQTWebKit system used in the Web media plugin with a shiny new one based on the Chromium Embedded Framework (CEF) that supports modern web technologies. In fact, we think this is such a big deal that we're cranking the Viewer version number to 4.0.0.
See a bug? If you don't see it filed already - file a Jira! We look forward to your feedback. Thanks!