[release_v2190] release notes template

ReleaseNotes.md

@@ -1,5 +1,55 @@
 # Release Notes
 
+## New in Release 2.19.0
+
+Post-training Quantization:
+
+- Breaking changes:
+- (OpenVINO) `nncf.CompressWeightsMode.E2M1` `mode` option is renamed to `nncf.CompressWeightsMode.MXFP4`.
+- General:
+  - ...
+- Features:
+  - The histogram aggregator was introduced, improving metrics for a number of classification models with PTQ.
+  - (OpenVINO) Introduced several new compression modes in `nncf.CompressWeightsMode`: `MXFP8`, `FP8`, and `FP4`. These can be used as the `mode` option in `nncf.compress_weights()` to apply the corresponding MXFP8, FP8, or FP4 precisions (experimental).
+- Fixes:
+  - ...
+- Improvements:
+  - Maximum memory consumption during statistic collection has been reduced by releasing model output memory before the next statistic collection inference call.
+- Deprecations/Removals:
+  - ...
+- Tutorials:
+  - [Deployment of a Post-Training Optimized Qwen3 Agent](https://github.com/openvinotoolkit/openvino_notebooks/blob/latest/supplementary_materials/notebooks/qwen-3/smolagents/qwen3_agent.ipynb)
+  - [Post-Training Optimization of ACE Step Model](https://github.com/openvinotoolkit/openvino_notebooks/blob/latest/notebooks/ace-step-music-generation/ace-step-music-generation.ipynb)
+- Known issues:
+  - ...
+
+Compression-aware training:
+
+- Breaking changes:
+  - ...
+- General:
+  - ...
+- Features:
+  - ...
+- Fixes:
+  - ...
+- Improvements:
+  - ...
+- Deprecations/Removals:
+  - ...
+- Tutorials:
+  - ...
+- Known issues:
+  - ...
+
+Deprecations/Removals:
+
+- ...
+
+Requirements:
+
+- ...
+
 ## New in Release 2.18.0
 
 Post-training Quantization: