Microsoft has officially released TMDL view as generally available in Power BI, moving it out of preview as of September 2025. The new release gives users full control and visibility over semantic models through a modern, code-first editing experience.

Here’s what’s new:

Enhanced Code Editor
Enjoy syntax highlighting for DAX and Power Query, helpful tooltips, auto-formatting, and quick code actions—similar to the TMDL Visual Studio Code extension.
TMDL Diff View
Review and compare changes before applying them for safer, more transparent updates.
Smarter Usability
Drag-and-drop sections and intuitive UI upgrades make editing faster and easier.
Stronger Robustness
Power BI Desktop is now hardened to open and edit any semantic model, enabling seamless collaboration with external tools, code files, or AI-powered edits.

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