Microsoft's last preview of IE9 before beta improves speed, standards compatibility
Just shy of one month before Internet Explorer 9 is expected to launch in beta, Microsoft Wednesday released the fourth and final IE9 platform preview. The release is meant to give developers and designers an opportunity to observe the enhancements to the Internet Explorer platform so they can adjust their sites to take advantage of the new technologies it uses.
Microsoft's strategy for IE9 has been to make it synonymous with the HTML5 standard, and to give the development community something new to work with about every eight weeks.
"Developers want to use the same HTML, the same script, and the same markup across browsers. That's the goal of standards and interoperability. No need for different code paths for different browsers. That's a key goal for HTML 5," said Internet Explorer General Manager Dean Hachamovitch at MIX 10 in March. "We love HTML 5 so much, we want it to actually work. In IE9, it will. We want the same HTML, the same script, the same markup to just work across browsers. So in IE9, we'll do for the rest of the Web platform what we did for CSS 2.1 in IE8."
Hachamovitch says this integration will make IE9 the first browser to have a shared document object model (DOM) between the browser itself and the script engine, based on ECMAScript5.
For it to hit 100%, IE9 needs to support SVG Fonts and SMIL animation of SVG, which Hachamovitch describes as standards that are "in transition," meaning support for them is less than total.