Yes. According to netmarketshare.com, Windows 8.1 went down from 6.61% in June to 6.56% in July. Windows 8 also went down from 5.93% to 5.92%.
Linux also shed users. It went from 1.74% to 1.68%. Well, that's not precisely breaking news. :P Linuxers know our OS is portrayed in the market share as an almost invisible yo-yo. (But hey! I'm glad I found this amazing yo-yo! You know what's best about a yo-yo OS? You REALLY need technique to do the sleeper trick when you use it! )
Back to the market share, what's really mind-bogging is that Vista climbed from 2.95% to 3.05%!
Seriously, what's going on? :P
Now, I don't intend to know what's happening and I won't make any predictions, either. To me, the OS market share is more a source to satisfy my curiosity and to have some fun.
Still, I think some people may be seriously worried about Windows 8.1. I guess Microsoft shareholders won't be happy about this news, for example.
Meanwhile, I read this interesting article in betanews.com.
One of the comments there, to answer why Windows 8 was doing so poorly, included this image: