-| [1.4](https://github.com/Azure/azure-iotedge/releases/tag/1.4.0) | Long-term support (LTS) | August 2022 | November 12, 2024 | IoT Edge 1.4 LTS is supported through November 12, 2022 to match the [.NET 6 release lifecycle](https://dotnet.microsoft.com/platform/support/policy/dotnet-core#lifecycle). <br> Automatic image clean-up of unused Docker images <br> Ability to pass a [custom JSON payload to DPS on provisioning](../iot-dps/how-to-send-additional-data.md#iot-edge-support) <br> Ability to require all modules in a deployment be downloaded before restart <br> Use of the TCG TPM2 Software Stack which enables TPM hierarchy authorization values, specifying the TPM index at which to persist the DPS authentication key, and accommodating more [TPM configurations](http://github.com/Azure/iotedge/blob/897aed8c5573e8cad4b602e5a1298bdc64cd28b4/edgelet/contrib/config/linux/template.toml#L262-L288) |
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