What’s new in IE9, Release Candidate (RC)

The Release Candidate of Internet Explorer 9, available now at www.BeautyOfTheWeb.com in 40 languages.

With this Release Candidate Microsoft has added over a thousand new test cases for JavaScript and updated over fifty test cases based on community feedback. During IE9 development Microsoft has now submitted just under 4000 test cases in total for standards like HTML5. Microsoft has submitted these tests to the appropriate standards bodies for feedback and eventual inclusion in their official test suites.

You can try them out for yourself at the IE Test Center.

Web Standard

# of Submitted Tests

Internet Explorer 9 RC

Mozilla Firefox 3.6.13

Opera 11.01

Apple Safari 5.0.3

Google Chrome 9.0.597.84

Internet Explorer 8

HTML5

111

99%

50%

61%

60%

77%

0%

SVG 1.1 2nd edition

70

100%

76%

94%

84%

89%

0%

CSS3

134

100%

59%

76%

71%

75%

10%

DOM

127

100%

93%

82%

84%

89%

6%

Navigation Timing

10

100%

0%

0%

0%

0%

0%

Web Applications

77

100%

49%

40%

35%

36%

0%

JavaScript

3413

100%

47%

47%

86%

89%

6%

So this version of the browser is way better than earlier (IE8, IE9 Beta) and highly competitive compared to the leading browsers (Firefox, Chrome).

Changes made to IE9 while moving from Beta to RC

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Source: http://blogs.msdn.com/b/ie/archive/2011/02/10/acting-on-feedback-ie9-release-candidate-available-for-download.aspx