Microsoft announced that the Metro version of the Internet Explorer 10 browser in Windows 8 will be plug-in free. The desktop version will still support plug-ins but the news is likely another nail in the coffin of Flash as most web developers will want to make sure that their sites run on all platforms. More details at Building Windows 8.
Running Metro style IE plug-in free improves battery life as well as security, reliability, and privacy for consumers. Plug-ins were important early on in the web