I got it here:
http://thenextweb.com/insider/2013/03/01/internet-explorer-continues-growth-past-55-market-share-thanks-to-ie9-and-ie10-as-chrome-hits-17-month-low/
Out of curiosity I had a peek at my own website's Google Analytics and looked at the browser stats for this year. Its a UK site. Stats were as follows:
IE9 - 14.51%
IE8 - 10.71%
IE7 - 1.55%
IE6 - 0.56%
On the OS side:
Windows 7 - 49.77%
Windows XP - 14.34% (which stops at IE8)
These stats don't tell the whole story, though; of the 30 or so major clients my company has, around 7 are dependent on either IE6 or IE7 in their intranet or call-centre environments. Most claim they will move away from them at some point in the future, but I can can see no evidence that it's happening quickly, due to the big corporate investment in application tools that still have a dependency on these old IE versions.
I'm deploying quite taxing cloud-hosted knowledge-base tools and a web-based live chat system. I'd love nothing more than to obsolete IE6 and IE7 and just develop for modern multi-threaded browsers with super-speedy JavaScript engines, but it's a pipe-dream for the moment.
jQuery is a very useful tool because it's cross-browser. That's the whole point. V2 won't replace the current version until IE8 and below are completely obsolete and that, I'm afraid, just can't happen for many years.