Yup.
From the article
“Previous versions of Microsoft operating systems sold considerably fewer licenses than Windows 8 in a comparable period, with XP shipping 8 million units in the month following its launch in 2002, and Microsoft Vista selling around 10 million licenses in the first 30 days following its introduction in 2006. “
In raw figures, Windows 8’s first month has been around twice as strong as for Windows Vista, and four times as strong as that of Windows XP"