The latest Unreal Engine 4.27+ releases include:
- Windows Mixed Reality (WMR) plugin replaced by OpenXR and Microsoft OpenXR plugin (Marketplace or GitHub)
- OpenXR offers feature parity with WMR
- Unified API for cross platform development
- OpenXR available for application creation in-engine — full feature set available with Microsoft OpenXR plugin
- Microsoft OpenXR plugin updates release when ready instead of in-engine updates
- Use the Graphics Tools Plugin for Unreal to improve visual fidelity of Mixed Reality applications while maintaining performance
- HoloLensAR plugin is removed in Unreal 5.0
- Support for World Locking Tools (5.0+)
- Support for Azure Object Anchors (4.27+)
See the Unreal Engine 5.0 release notes for more.
The latest Unreal Engine 4.26 release includes:
- Support for new cross-device XR APIs
- OpenXR support + Microsoft OpenXR plugin
- HoloLens Media Player plugin for performant video playback
- Azure Spatial Anchors for iOS and Android (beta)
- Support for reverse connections when remoting, enabling streaming from Azure to HoloLens 2
- HoloLens 2 system keyboard access
- Windows App Certification Kit compliance for packaged apps
- Unreal Insights support for HoloLens 2
- HP Reverb G2 controller support
See the Unreal Engine 4.26 release notes for more.
Unreal Engine 4.25 includes:
- Mixed Reality UX Tools plugin support
- App Remoting from a desktop app
- Better performance
- Mixed reality capture
- Initial support for Azure Spatial Anchors
See the Unreal Engine 4.25 release notes for more.