good answer by Nick Berardi - checking out Scott Gu's Twitter -

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@sirkirby Yes - we'll be updating the Microsoft AJAX CDN to host jQuery

1.4. We'll also have full intellisense support for it. 2:47 PM Jan 14th
from web in reply to sirkirby

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This typically comes out 2 weeks after a new release. Because the Visual Studio Documentation XML for JavaScript is non-standard and requires a lot of manual work to move from JSDoc to VSDoc. Give it another week and you should see an announcement on the Gu's blog.

I think you'll find that the vsdoc-ing the jquery source is a separate exercise done by peeps working for Microsoft. There is bound to be a lag between the releasing of jquery code and these peeps getting around to tweaking it up for intellisense in VS.

If it's not on google it doesn't exist ;-)

According to http://code.google.com/p/jqueryjs/downloads/list latest available version with Intellisense is 1.3.2.

As you can see:

http://www.asp.net/ajaxLibrary/cdn.ashx

The vsdoc for jquery 1.4 (or 1.4.1) is not yet ready or atleast published/linked

but in that website i'm sure you'll find it when ready

I believe you may be looking for the jQuery Code Snippets for Visual Studio 2010.