Desktop Apps for Windows 8 on App Store
Some weeks back we had read about side loading of enterprise applications and that the app store was mainly for uploading and sharing metro apps. There is an update to that now whereby we can list desktop apps on app store as well. Do note there is only listing support. Desktop apps will not be deployed via app store.
An Individual user can probably use this and then get to the desktop app's main website to download and install it. An enterprise user will mostly still rely on side loading as it is unlikely that enterprises will allow direct access to app store to install either Metro apps or search desktop apps.