CSS3 Gradients (on all image types)
CSS stylesheet limit lifted
CSSOM Floating Point Value support
Improved hit testing APIs
Media Query Listeners
HTML5: Support for async attribute on script elements
HTML5 Drag and Drop
HTML5 File API
HTML5 Web Workers
Web Performance APIs:
Page Visibility API
Internet Explorer 10, expected in beta form later this year, will only be available for Windows 7 and 8.
Microsoft confirmed in April that it has no plans to offer IE10 to Vista or Windows XP users. Future platform previews of Internet Explorer 10 will be made available every 8-12 weeks. Internet Explorer 10 platform preview 2 is available for download at Microsoft’s IE test drive site.
You can check it out here…
Check out more details in this video..