Microsoft on Thursday divulged a few more details about its upcoming Internet Explorer 7, and admitted that its implementation of tabs -- one of the most-requested new features -- will be just "catch-up" to rivals such as Firefox and Opera.

Tony Schreiner, a Microsoft developer with the IE team, posted a lengthiest-yet description to the Redmond, Wash.-based company's blog of how tabs will be implemented in the upcoming IE 7. The browser is expected to roll into beta sometime this summer.

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