Release Notes

3.0.0

Preview

Build 439 (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 Role now reports to be either Authority or SimulatedProxy based on whether it can be modified
• The NetMode now reports to be a Client

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