Uno Platform has released version 6.5, its February update, bringing a range of improvements to both its Studio tooling and the core cross-platform framework. The team states that the release resolves more than 450 community and customer issues.
One of the headline additions in this release is support for Google’s Antigravity, an agent-first development environment built on top of VS Code. Through integration with the Uno Platform App MCP server, AI agents working inside Antigravity can now interact with a running Uno application at runtime.
As expressed in the announcement blog post, an agent can inspect the visual tree, take screenshots, simulate user input, and verify real interface behavior rather than relying on static code analysis. The results of those checks are saved as reviewable artifacts, giving developers a concrete record of what the agent did and found.
On the Studio side, Hot Design, Uno’s live visual design tool, has received several usability improvements. It now launches automatically when a new project is run for the first time, removing extra setup steps. A new introductory experience guides users through the three available modes: Agent, Design, and Interactive.
The floating toolbar that previously appeared over the app window has been replaced with a fixed toolbar anchored to the top of the screen, a change the team says came directly from community feedback.
A new scope selector has also been added, allowing developers to navigate directly to any UserControl or template visible on the current screen, which is intended to simplify editing deeply nested interface structures.
At the platform level, version 6.5 adds Unicode support to the TextBox control. Non-Latin scripts, including Arabic, Mandarin, and Hindi, now render with correct caret positioning, text selection, and keyboard navigation. The team notes that Input Method Editors for languages like Chinese, Japanese, and Korean are not yet supported in this release.
WebView2 on WebAssembly has also been improved, with more reliable loading of locally bundled web assets. Drag-and-drop on WebAssembly using the Skia renderer has been expanded to support file drops from external applications.
The release also includes broader stability improvements across all supported targets, including WebAssembly, iOS, Android, macOS, Windows, and Linux, with fixes covering controls such as TextBox, ListView, ProgressRing, PasswordBox, and MenuFlyout, among others.
Other changes in this release include Skia rendering improvements, better error diagnostics, app startup and navigation reliability fixes, and further WebView stability across platforms.
For interested developers, the full and detailed release notes are available on the official Uno Platform blog post.
