Read original post at Building Apps for Windows
Marmalade, a Windows platform middleware partner, just released a new version of their popular SDK. The Marmalade SDK enables developers to deploy code across multiple platforms and devices from a single code base. The new 7.3 SDK release brings new capabilities for Windows 8 and 8.1 and Windows Phone 8 across all license types, including Community licenses. And for new users, the SDK will be available for no license fee. Existing users with Indie, Plus or Pro licenses will get a free upgrade.
The addition of the Extension Development Kit for Windows Store (both Windows 8 and Windows 8.1 apps), enables developers to access Windows managed and native APIs, plus integration with advertising and social networks.