We have searched for ways to MIX10 for Windows Phone 7 juicy tidbits – and you already have our demo videos on the newest applications and functionality? – Smartphones are not the only think Microsoft wants to talk developers. Today, the Internet Explorer 9 has been in line to on the stage, with a focus on hardware-accelerated HTML5, a new JavaScript engine and Direct 2-D technology.

Far in its current state, the new JavaScript engine takes off IE8, as you can see in the graphic below. It is behind Chrome, Safari and Opera 10.5 at the moment, but besting Firefox 3.6 (with a little, anyway), and we are promised further improvements, as they tweak the script. Part of the way Microsoft approached JavaScript is to make it run in a separate thread in the background by the browser, even on a separate CPU core, if available. That takes better advantage of multi-core processors, a decent idea because many people spend the most time in their browsers in those days.

Now that a complete release of the new IE9 is now the company is “Platform Preview”, but there are some downloads that you can try if you are open-minded developers. The IEBlog has several links, and they will continue to update the preview all eight weeks prior to the release client. In fact, they are honest, especially about the current shortcomings of the date, the 55 goes from 100 tests in Acid3 benchmarking tool for compliance with the standards of browser testing. You can find the new Platform Preview build here.