According to NetMarketShare in December:
W7, W10 & XP all increased their share of the market
The W8 Series (W8 & W8.1) has a smaller market share than XP
395100
Data from NetMarketShare
According to NetMarketShare, W10 showed no real growth again. 393354
NetMarketShare
Just like last month, other sites showed similar results.
The Register provided some handy tables.
The Register
This is potentially bad news for W7 and the W8 Series fans.
MS will be forced to...
In September, all main Desktop OS categories lost market share, apart from W7. https://www.tenforums.com/images/smilies/012.png https://www.tenforums.com/attachment.php?attachmentid=104322&stc=1392379
Data from NetMarketShare
I hope this doesn't inspire a new outbreak of the GWX annoyance.