WinSuperSite and Within Windows have another new Windows 8 feature to share. Soon, you may no longer need to install any extra software to view that ever popular PDF format, thanks to an integrated PDF reader called Modern Reader that will ship with Windows 8
While almost everyone running Windows these days has Adobe Reader, or some equivalent, Microsoft is building that functionality right into the next OS. Hopefully it will be a lightweight alternative.
Modern Reader also appears to be an early example of the new AppX application package for Windows 8. AppX is a packaged application model for Windows 8 that is much like the one used in Windows Phone 7.