> ## Documentation Index
> Fetch the complete documentation index at: https://motorbridge.seeedstudio.com/llms.txt
> Use this file to discover all available pages before exploring further.

# MotorBridge 0.4.6 Release Test Note

<Note>Source: `CHANGELOG.md`</Note>

# MotorBridge 0.4.6 Release Test Note

Date: 2026-06-12

## Summary

Adds a Damiao `4340_v20` model alias, WebSocket token-in-query auth, and fixes
duplicate-motor registration during state polling.

## Version Alignment

| Component             | Version  |
| --------------------- | -------- |
| Git release tag       | `v0.4.6` |
| Rust workspace crates | `0.4.6`  |
| Python package        | `0.4.6`  |
| C++ package metadata  | `0.4.6`  |

## Key Changes

### Fixed

* Reused existing Damiao motor handles during `damiao_state_many` polling so
  repeated browser telemetry no longer fails on duplicate motor registration.
* Allowed browser `ws_gateway` clients to send `MOTORBRIDGE_WS_TOKEN` in the
  WebSocket URL query as `?motorbridge_ws_token=...` while keeping existing
  header-based auth and non-loopback token requirements unchanged.

### Added

* Damiao `4340_v20` alias with `4340X` display name for the v2.0 hardware
  revision.

## See Also

* [WebSocket Gateway](/source/integrations/ws-gateway/overview)