Starting today, Microsoft is updating Internet Explorer 10 in
Windows 8 and Windows RT to enable Flash content to run by default. On Windows 8, all Flash content continues to be enabled for IE on the desktop.
With this update, the curated Compatibility View (CV) list blocks
Flash content in the small number of sites that are still
incompatible with the Windows experience for touch or that depend
on other plug-ins.
Microsoft will make the update available with Windows Update. The curated
CV list applies to IE on the desktop for Windows RT since the most
common reason to block Flash is that the site relies on other
plug-ins that are not available on Windows RT.
For Windows 8, Microsoft worked with Adobe to include a version of
Flash that is optimized for touch, performance, security,
reliability, and battery life.