A toolkit for Windows Azure for Android has been released by Microsoft, along with updated toolkits for Windows Phone and iOS platforms.
The Windows Azure Toolkits for Devices provides libraries for storage and authentication that you can use to create mobile apps for Windows Phone, Android and iOS that use Windows Azure cloud services.
The toolkit has a set of Visual Studio project templates, along with libraries, sample applications, and documentation. You can use the toolkit to access Windows Azure storage directly, or you can use a proxy server.
The updated toolkit for Windows Phone includes support for SQL Azure as a data source through using OData, updates for the Windows Azure Tools for Visual Studio 1.4 and the Windows Phone Developer Tools 7.1 RC. There’s a good description of the improvements to the toolkit and how to use them on the Windows Phone Developers blog.