Comment Improved standards isn't the story here (Score 5, Informative) 383
The real story here is that "Developers wishing to use quirks mode for IE6- and IE7-compatible rendering will have to opt in explicitly."
If you've been following any of the design / developer blogs and community response about this, you'll know that in a previous plan, all web pages would render in IE7 standards mode unless the developer inserted a specific meta tag
into each web page of a site. (For the truly avant garde, one could set the content to "edge", which would tell IE to render in the most current standards compliant version available). The outcry was that while it was clear that IE was making progress in standards, in order to take advantage of those improvements, developers were being asked to touch each page of their sites and tell IE to use its more standards compliant mode. That discussion is what was at play here.<meta http-equiv="X-UA-Compatible" content="IE=8"/>