Microsoft has announced a major update to the beta release of Windows App Studio, its Web-based developer tool for creating mobile apps.

The most significant changes and additions to Windows App Studio, detailed in a blog post by Emilio Salvador Prieto of the Windows Phone Developer Experience team, are integration with Microsoft’s TouchDevelop programming language, and the end of support for Windows 8.0 app creation, editing and updating.

Windows App Studio now has the ability to import apps and games programmed using TouchDevelop as a data source.

“App Studio users can now add single or multiple TouchDevelop sections to add richer features to their apps,” Prieto wrote. “With just a few clicks, select TouchDevelop scripts are imported into App Studio, ready to generate an AppX package to side-load on any phone, tablet or PC running Windows 8.1, or [to] publish to Windows Phone or Windows Store.”

At the moment, there is no full support for importing TouchDevelop apps that include Web requests and device capabilities such as Bluetooth and Calendar integration. But according to Prieto, developers can test functionality by copying script IDs into TouchDevelop DataSource in App Studio to verify whether any given app or game can currently be imported.

As for Windows Phone 8.0 apps, developers will still have access to existing apps, but going forward changes to those apps can only be made in Visual Studio 2013. Windows App Studio is now only compatible with Windows 8.1 universal apps.

The latest update to Windows App Studio also adds the ability to create universal Web App Templates to run on any device running Windows 8.1 in accordance with Microsoft’s universal Windows apps philosophy. The release also contains improvements to code generation and build workflows for enhanced feedback about background processes during code generation and compilation.

A closer look at TouchDevelop
TouchDevelop is a visual programming language developed by Microsoft Research over the last several years, designed to simplify the creation of cross-device mobile and Web apps.