DiSTI Corporation announces an upgrade of its GL Studio HMI development software tool. Update to GL Studio 8.1 today. Today, the DiSTI Corporation announced an update to its HMI development tool, GL Studio®. This latest update, GL Studio 8.1, adds ancillary product support (GlsRSOLoader and GlsMapToolkt) for macOS, Best Practice Workflows documentation, an Interface Control Document (ICD) Generator Package, along with support for Visual Studio 2022 and Windows 11.