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![Amazon.com: Microsoft Windows 8 Pro - Upgrade [Old Version]](https://m.media-amazon.com/images/I/81LFIK+nemL._AC_UF1000,1000_QL80_.jpg "Amazon.com: Microsoft Windows 8 Pro - Upgrade [Old Version]")
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![29+] Windows 8.1 Pro Wallpapers - WallpaperSafari](https://cdn.wallpapersafari.com/97/34/kNVKuZ.jpg "29+] Windows 8.1 Pro Wallpapers - WallpaperSafari")
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Microsoft Surface with Windows 8 Pro: Hotter, Thicker, Faster, Louder | Ars Technica
The Windows 8.1 Preview is here! | Windows Experience Blog
