You’ll see more performance, same markup, and hardware accelerated HTML5
Developers are sure to be excited by the inclusion of the <AUDIO>, <VIDEO> and <CANVAS> tags from the HTML5 specification with Internet Explorer Platform Preview 3 taking full advantage of the underlying hardware in your PC to render <VIDEO> and <CANVAS> elements.
The Platform Previews remain targeted primarily at web developers and designers
For more details about what’s new in Internet Explorer, see HTML5, Native: Third IE9 Platform Preview Available for Developers.
For demos of the new features, see Internet Explorer 9 Platform Preview 3: A Look at the New Demos on Channel 9.
Test drive IE 9 at Internet Explorer Platform Preview.
Bruce D. Kyle
ISV Architect Evangelist | Microsoft Corporation