I can believe that. But it'd be about time after 8 previous versions. (and that's not even counting the in between updates)
Windows 7 is awesome though. Also about time.
IE9 is indeed a different animal. For one thing, it is the only browser out there right now with full hardware acceleration on its graphics. Basically it offloads the page rendering to the GPU on your computer instead of the CPU. As a consequence it handles graphically intensive pages VERY fast. Here is a MSDN blog concerning it:
http://blogs.msdn.com/b/ie/archive/...dware-acceleration-through-flying-images.aspx
On the flip side, it needs Direct X 11 to do this, do it only works its magic in Windows 7 or a Vista machine that has been bumped up to DX11. Likewise its performance will drop if running inside a Virtual Machine because it is doing direct offload to the GPU.
MS has had missteps, but IE8 and 9 running in Win 7 is pretty cool on PCs. In smartphones it is different - basically the Android Browser rules the performance and usability roosts, with the HTC mod of it being top dog.