Microsoft through it blog post stated that from now onwards in order to download, buy, update or review apps in Marketplace, user required Windows Phone 7.5 on phones. The change applies to both the phone and web Marketplace storefronts.
“Most phones are already running Windows Phone 7.5, which was released last fall, and so most of you won’t notice anything different about how the Marketplace works,” Microsoft’s director of program management, Mazhar Mohammed, said in a blog post. “However, if your phone has an earlier version of our software installed, you’ll soon start seeing an error message when you try to download a new app, or update one you already own.”
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