jQuery very popular, so why don’t browsers wire in the last few versions of jQuery, going a little further than the current CDN?
No more downloading, no more manual updating, pre-compilation of the library (faster loading time), less worry for developers, better browsing experience for users, etc.
I would assume version control is the fear…
different sites use different versions of jQuery…
AND
the last thing I want is the elephants in the room (google, microsoft, and mozilla) fighting over implementation details of a very successful and independant open source project…