Hi
Do we still need the HTML5 javascript shim to enable the HTML5 features IE9 does not yet support? Or is there another version for IE9? If we don't need it, what change to the IE version check should we implement so its not called on IE9 browsers. Thanks.

Yes, you should still use either the shim or the shiv to enable HTML5 features in IE (regardless of versions). IE9 does a pretty good job with most HTML5 elements, but you'd rather be safe than sorry.

Other good option is: Modernizr, which is used in the HTML5 Boilerplate. It will give you all kinds of detailed control over not just IE, but all major browsers regardless of vendor or version.

Modernizr and HTML5 Boilerplate look to be awesome. Thanks for sharing the links.