"Following a somewhat mixed reaction to Windows 8, Windows 8.1 has made steady progress since its launch," commented Aodhan Cullen, CEO, StatCounter. "It passed Windows 8 in August and has now passed Windows XP in November. The growth trajectory for Windows 8.1 has been positive but if current trends continue it will not topple Windows 7 before Windows 10 is launched in 2015."
In the US Windows 8.1 is at 12.2% having overtaken XP in October. Windows 7 leads with 43.9%.
In the UK, where Windows 8.1 overtook XP in April, XP has declined to 4.2% while Windows 8.1 is currently at 13.2%. Windows 7 is number one on 40.4%.