Since its GA release on March 19 and its addition to Windows Update in late April, Internet Explorer 8 has been gradually increasing its market share in the US. Based on the current growth pattern in StatCounter's GlobalStats data, it appears that Internet Explorer 8 will overtake Internet Explorer 6 sometime in late May or early June.
In other parts of the world, the adoption of the new version of Internet Explorer is substantially slower, and affected by regional differences in the browser population. Europe is notable in this as MSIE8 has just overtaken Opera 9.6 in the browser population in the last week.
In Asia, Internet Explorer 8 has moved into fourth in browser share, but is a substantially lower percentage of the population than the top three browsers. In a frightening statistic, Internet Explorer 6 is the most popular browser in Asia, indicating that path to adoption may be longer in this region.
Overall the adoption of this new browser as a replacement for Internet Explorer 6 and 7 is slow and steady. MSIE8 does not appear to be significantly cutting into the Firefox population, but this could change as people begin to hear more about the features of the new browser, and Web sites begin to be designed to its features, rather than those of MSIE6 and MSIE7.