Windows Vista holds on to a marketshare of 6.1 percent and 0.23 percent of PC users are using a pre-release version of the upcoming Windows 8 operating system. Another interesting observation is that Apple's marketshare now exceeds that of Windows Vista, the combined share of the different OS X versions adds up to 7.11 percent.
Microsoft has seen Windows 7's share rise by roughly 1 percentage point month-on-month for around the past year -- about the same level of decline seen in Windows XP -- while Vista's share has remained static at around 6 percent over the past quarter.
Not all web tracking companies agree on when Windows 7 became the dominant OS: StatCounter reported Windows 7 overtaking XP almost a year ago, and now puts Windows 7's overall market share at over the 50 percent mark.
Source: CNET