2026.5.21-173

This version focuses on stability, usability, and a smoother overall experience.
Alongside several under-the-hood improvements, we’ve also continued preparing the platform for future XR Toolkit and rendering features.

Improvements & Features

• Updated the Unity engine and related packages.
• Improved compatibility and loading behavior for glTF content.
• Added support for enabling or disabling label backgrounds in .c2prj projects.
• Improved loading performance for image-based labels.
• Expanded notification messages with an additional line of text.
• Continued groundwork for future state-machine and capability loading systems.
• Added preparations for synchronized user state messaging.
• Improved rendering performance and modernized rendering systems.
• The legacy 3D Models app is now being phased out in favor of the Explore app, including in-app guidance and redirect messaging.

Performance & Stability

• Improved overall stability.
• Added several rendering and performance optimizations to reduce stale frames.
• Improved memory handling and serialization performance.
• Fixed loading issues related to certain .c2prj configurations.
• Improved warning and metadata logging for XR Toolkit projects.
• Fixed issues with interactive object highlighting and silhouette rendering.
• Improved label layout sizing when enabling or refreshing labels.
• Improved compatibility handling for older modules and legacy paths.
• Improved file filtering behavior in the Explore app file picker.
• Fixed an issue in Casting Mode where the local user’s avatar remained visible while viewing through that user’s perspective.
• Fixed an issue where avatar hand colors could appear grey instead of blue when no custom avatar was assigned.

Maintenance & Internal Improvements

• General cleanup, maintenance, and modernization work across rendering features and platform systems.
• Additional internal preparations for future platform and workflow improvements.