# Version 0.4.0



## What's new in 0.4.0
- New operator to automate inference with the newly introduced [MONAI Bundle](https://docs.monai.io/en/stable/whatsnew_0_9.html)

### MONAI Bundle Inference Operator

The new operator, `MONAI Bundle Inference Operator`, is intended to automate the inference with a MONAI Bundle in TorchScript with the following functionalities:
- Parse the model metadata and extra configuration data in the TorchScript file
- Instantiate MONAI transforms and inferer objects per bundle configuration data
- Convert input/output of the operator to and from model network input
- Support named model and can be used in a multi-model application

The example [spleen segmentation application](https://github.com/Project-MONAI/monai-deploy-app-sdk/tree/main/examples/apps/ai_spleen_seg_app) was accordingly updated to demonstrate the use of this new operator with the newly published [Spleen CT Segmentation Bundle](https://github.com/Project-MONAI/model-zoo/tree/dev/models/spleen_ct_segmentation).

More details are in the [tutorial](https://github.com/Project-MONAI/monai-deploy-app-sdk/blob/main/notebooks/tutorials/06_monai_bundle_app.ipynb).

## What's fixed/updated

- [[FEA] A generic operator to automate inference execution with a MONAI Bundle](https://github.com/Project-MONAI/monai-deploy-app-sdk/issues/286)
- [[FEA] Integrating Model Zoo and MMAR](https://github.com/Project-MONAI/monai-deploy-app-sdk/issues/213)
- [[FEA] Multi-model support in an application built with MONAI Deploy App SDK](https://github.com/Project-MONAI/monai-deploy-app-sdk/issues/244)
- [[DOC] Missing python dependencies for the segmentation app](https://github.com/Project-MONAI/monai-deploy-app-sdk/issues/299) and the [duplicate](https://github.com/Project-MONAI/monai-deploy-app-sdk/issues/305)
- [mednist_app:latest -- No module named 'nibabel'](https://github.com/Project-MONAI/monai-deploy-app-sdk/issues/302)
- [[DOC] Series Selector dictionary](https://github.com/Project-MONAI/monai-deploy-app-sdk/issues/300)

## Additional information
Please visit [GETTING STARTED](/getting_started/index) guide and follow the tutorials.

You can learn more about SDK usage through [DEVELOPING WITH SDK](/developing_with_sdk/index).

Please let us know how you like it and what could be improved by [submitting an issue](https://github.com/Project-MONAI/monai-deploy-app-sdk/issues/new/choose) or [asking questions](https://github.com/Project-MONAI/monai-deploy-app-sdk/discussions)