Microsoft today detailed the new Windows 8 Photos app. This new app designed with Metro design principles allows you to connect your Microsoft account to services like Facebook and Flickr and get all of your photos in one place. Also the Photos app works best with SkyDrive service, and with Windows Phone, you will be able to automatically send all the pictures from your Phone to SkyDrive. As other Windows 8 apps, Photos app allows you to share photos using share charm in Windows 8. It even allows you to import photos from your memory cards, thumb drives, etc,.
Read more about it here.