Added release note for v3.2.0 (#561)

* Added release note for v3.2.0

Signed-off-by: M Q <mingmelvinq@nvidia.com>

* Correct title

Signed-off-by: M Q <mingmelvinq@nvidia.com>

* codespell failed, but copilot caught the typo

Signed-off-by: M Q <mingmelvinq@nvidia.com>

* Punctuation

Signed-off-by: M Q <mingmelvinq@nvidia.com>

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Signed-off-by: M Q <mingmelvinq@nvidia.com>

Author: MMelQin

docs/source/release_notes/index.md

@@ -10,6 +10,7 @@
 ```{toctree}
 :maxdepth: 1
 
+v3.2.0
 v3.1.0
 v3.0.0
 ```

docs/source/release_notes/v3.2.0.md

@@ -0,0 +1,20 @@
+# Version 3.2.0 (September 2025)
+
+## What's new in 3.2.0
+
+This version of the App SDK is compatible with [Holoscan SDK v3.6.0](https://pypi.org/project/holoscan/3.6.0), as it has been tested compatible with the latest [MONAI at v1.5.1](https://pypi.org/project/monai/1.5.1/) which supports the latest PyTorch v2.8. PyTorch version 2.7 and above have embedded CUDA Runtime `>= 12.6.77`, which is required by HSDK v3.6 on X86_64 Linux workstations.
+
+### Key changes
+
+- Compatible with the latest MONAI v1.5.1 and Holoscan v3.6.0.
+- Enhanced the built-in bundle inference operator to support folder based MONAI Bundles as required by application generator tool.
+
+
+Please also see the <a href="https://github.com/Project-MONAI/monai-deploy-app-sdk/issues?q=is%3Aissue+is%3Aclosed">closed issues on Github</a> and the <a href="https://github.com/Project-MONAI/monai-deploy-app-sdk/pulls?q=is%3Apr+is%3Aclosed">closed pull requests on Github</a>.
+
+## 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).