Release Notes
3.0.0
Preview
Build 760 (Feb 12, 2026)
Bug Fixes
- Fixed: Adjust a number of Fusion Blueprint nodes so that the main input parameter defaults to self as they did previously: HasOwner, GetOwner, GetResolvedOwner, IsOwner, CanModify
- Fixed: Fix issue where remote Pawns were being assigned the local PlayerController. Remote Pawns no longer have a PlayerController set
Build 756 (Feb 11, 2026)
Bug Fixes
- Fixed: Fix closing PIE instance crash
- Fixed: Fix issues in seamless travel
Build 720 (Feb 10, 2026)
Breaking Changes
- Correct spelling of "Recieve" to be "Receive" for Fusion RPC functions. Fusion C++ RPC functions need to be renamed from *_Recieve to *_Receive
- Previous SDK versions are no longer compatible with deployed infrastructure. Please update to this (build 719) or later.
What's New
- Add support for using Actors, Objects, Classes as RPC parameters
- Connecting to the Photon Cloud supports now choosing the best region based on the players ping
- All edge cases around object life cycles should be solved to provide more consistent replication
- Android support and crossplay support between Android and Windows
- Removed interpolation of replicated properties, the behaviour of Fusion now matches unreals netcode more closely in several regards.
- Property RepNotify's now supports previous value argument.
- Native remote function calls now supported in both blueprint and c++, see documentation for further details. RPCs In Depth
Improvements
- Improved physics prediction and replication further
- All public code should now conform to the unreal formatting standard
- Fusion can now use "Run Under One Process" mode in unreal editor
Bug Fixes
- Fixed: Fix issue where a client may not be reliably informed of an object having its owner removed
- Fixed: Fix a potential issue where an actor would not be properly replicated if it is part of a map and immediately possessed
- Fixed: Prevent an assert triggering when loading into level when using UE 5.4.4
- Fixed: Manually set netdriver world
- Fixed: Issue with map loading when loading the same map again
- Fixed: Map actors now use a consistent hashing for identifying sub components which removes the need for consistent component order on all connected clients.
Build 492 (Jan 12, 2026)
What's New
- Unreal 5.7 support
Bug Fixes
- Fixed: Native pointer usage in member declaration preventing a shipping build
Build 438 (Dec 18, 2025)
Breaking Changes
- Previous SDK versions are no longer compatible with deployed infrastructure. Please update to this (build 438) or later.
What's New
- Added full support for the
Character Movement Component - Added internal "string heap" replication system for string and text data
- Added support for networking GameInstance and calling Fusion RPCs on it
- The Actor
Rolenow reports to be eitherAuthorityorSimulatedProxybased on whether it can be modified - The
NetModenow reports to be aClient
Improvements
- Object replication model has been updated to reduce bandwidth and improve type support
Bug Fixes
- Fixed: Issue where a replicated Actor reference set to None/nullptr by the authority would not be correctly set on remote clients
- Fixed: Duplicate CreatedLocal existed on derived RootObject, hiding other implementation
- Fixed: RPC regression fix, datatypes not properly serialized
- Fixed: IsOwner and CanModify was not properly evaluating all conditional branches
- Fixed: Race condition on sub-object system during object destruction
Build 354 (Nov 25, 2025)
Bug Fixes
- Fixed: Prevent crash and add error log when running multiple PIE windows in one process
Build 349 (Nov 24, 2025)
- Initial release