In March 2011, IE dropped below 40% in market share and Google Chrome raised about 20% in market share.
Browser market share remained largely unchanged in February 2011. During the month, Microsoft released RC for IE9, with the official launch expected in March.
Microsoft IE lost another 1% in market share in March 2010. In an effort to jumpstart IE, Microsoft released a preview of the next generation, IE9, in mid-March.