+This means that `MODELS_IMAGE: "ntsim_oran_light:latest"` can be used as an environment variable when starting the NTS Manager.
+
+
+## Release notes
+
+### **version 0.6.1**
+
+Added features:
+* **Manual notification generation** - this enables the user to send a NETCONF notification from a simulated device, using the *invoke-notification* RPC defined in the NTS Manager.
+* **automatic pulling of the simulated device image** - the NTS Manager will automatically try to pull the image of the simulated device (as defined in the **MODELS_IMAGE** environment variable) before starting a simulated device.
+* **custom naming of simulated devices** - the user can now define its own name prefix for simulated devices, through the **CONTAINER_NAME** environment variable defined in the docker-compose.yml. E.g.: if CONTAINER_NAME: "ntsim", the simulated devices will be: *ntsim-0*, *ntsim-1* etc.
+
+Bug fixes and improvements:
+* **ssh-connections** and **tls-connections** are now removed from the simulator-config, and can be set only when the NTS Manager is started, through the **SshConnections** and **TlsConnections** environment variables defined in the docker-compose.yml. The leafs are not moved in the simulator-status, such that the user can check at runting what are the values defined.
+* **fault-notification-delay-period** has now the attribute *ordered-by user*, meaning that the order defined by the user when adding multiple values to the leaf-list is preserved.
+
+### **version 0.5.1**
+
+Added features:
+* **NETCONF Call Home** - this enables each simulated device to use the Call Home feature to connect to the ODL instance, once it boots up. **Please note that when a device is using Call Home, it will no longed expose all the number of *ssh-connections* and *tls-connections*, but a single Call Home endpoint. **
+* **controller-details** configuration leafs are now exposed can now be set at startup time in the docker-compose YAML file, as environment variables.
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