Microsoft says 36 million copies of the beta and release candidate have been downloaded in the last seven months. 
Microsoft today announced it would launch Internet Explorer 9 (IE9) on Monday, March 14.

The   announcement was no surprise: A month ago, Microsoft issued  invitations  to the press for a March 14 event at SXSW (South by  Southwest  Conferences and Festivals) in Austin, Texas. The company had  also  promised to ship IE9 in the first quarter, which ends in three  weeks.
IE9  will be available for download from Microsoft's servers  beginning at 9  a.m. PT Monday, said Dean Hachamovitch, the head of IE's  engineering, in  a blog post today.
At some point after the "release to the Web,"  or RTW of March 14,  Microsoft will start offering the new browser to  Windows Vista and  Windows 7 users. If it hews to its usual practice,  those offers will  begin to appear about six weeks later.
Previously, Microsoft has given users the opportunity to reject or   delay the installation of major browser upgrades. It has also published  a  blocking toolkit that enterprise IT administrators can use to insure   IE9 doesn't make it onto company PCs.
Windows XP users will not see the IE9 RTW offer because the 
browser does not work on the still-dominant operating system, an omission that rivals have used to their advantage.
The launch of IE9 comes one year after Microsoft delivered the browser's 
first "platform preview,"  a bare-bones early build that lacked an interface and basic navigation   tools. IE9 follows its predecessor, IE8, by two years, a   slightly-shorter cycle than the two years and five months between IE7   and IE8.
Microsoft released a public beta of IE9 last September, and followed that with a 
"release candidate," (RC) a month ago.
According to Microsoft, 36 million copies of the beta and RC have been downloaded in the last seven months.
While  the numbers may be impressive, IE9 has yet to make an impact  on  Microsoft's global browser usage share. Statistics from Web metrics   company Net Applications pegged IE9's share in February at 0.6%, the   same as IE8 had six months before that browser's March 2009 launch.
IE's total usage share has slipped about three percentage points since Microsoft introduced the beta of IE9.
However,  it appears likely that Microsoft will beat Mozilla to the  upgrade punch  Monday. The latter's Firefox 4, once slated to ship in  November 2010,  is nearing completion -- Mozilla has wrapped up the  first RC of Firefox 4  -- but will apparently go final after IE9.
Like Microsoft,  Mozilla has high hopes its newest browser:  Firefox's share has dropped  three percentage points since it peaked at  24.7% in November 2009.
IE9 RTW should be available at several locations on Microsoft's site, including its 
Download Center and the 
IE page.
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