# Release History

This section describes the changes in previous versions of EI Tunnel Manager.

## EI Tunnel Manager 2.2.1

This version added the following new features and enhancements:

- Added a new Hybrid Switches page for managing hybrid switches.

- The Data Forwarding page now supports Azure Storage Blob and REST connections.

## EI Tunnel Manager 2.2

This version added the following new features:

- Support for the new EI-A3-TUNMGR- and EI-A9-TUNMGR-series devices.

- Image stitching across devices to allow single-image per side output on premium systems (add-on license).

- Pass-through access to web HMIs, including:

  - DataMan readers

  - 3D-A1000 dimensioning units

  - Mettler-Toledo TLD-950 dimensioning units

  - Remote Desktop

This version added the following enhancements and changes:

- Added the following additional protocols supported by Data Forwarding:

  - Amazon S3

  - Amazon SNS

  - Azure IoT Hub

  - FTP

  - MQTT

  - SFTP

- Added a photoeye testing step to the Dynamic Test Tunnel Setup app.

- You can now switch between a light mode theme and dark mode theme.

- General fixes and enhancements to the workflow of Tunnel Setup and commissioning apps.