[Release_v2150] Update ReleaseNotes.md

ReleaseNotes.md

@@ -1,5 +1,64 @@
 # Release Notes
 
+## New in Release 2.15.0
+
+Post-training Quantization:
+
+- Breaking changes:
+  - ...
+- General:
+  - ...
+- Features:
+  - ...
+- Fixes:
+  - ...
+- Improvements:
+  - Significantly faster data-free weight compression for OpenVINO models: INT4 compression is now up to 10x faster, while INT8 compression is up to 3x faster. The larger the model the higher the time reduction.
+  - AWQ weight compression is now up to 2x faster, improving overall runtime efficiency.
+  - Peak memory usage during INT4 data-free weight compression in the OpenVINO backend is reduced up to 50% for certain models.
+- Deprecations/Removals:
+  - ...
+- Tutorials:
+  - [Post-Training Optimization of GLM-Edge-V Model](https://github.com/openvinotoolkit/openvino_notebooks/blob/latest/notebooks/glm-edge-v/glm-edge-v.ipynb)
+  - [Post-Training Optimization of OmniGen Model](https://github.com/openvinotoolkit/openvino_notebooks/blob/latest/notebooks/omnigen/omnigen.ipynb)
+  - [Post-Training Optimization of Sana Models](https://github.com/openvinotoolkit/openvino_notebooks/blob/latest/notebooks/sana-image-generation/sana-image-generation.ipynb)
+  - [Post-Training Optimization of BGE Models](https://github.com/openvinotoolkit/openvino_notebooks/blob/latest/notebooks/llm-rag-langchain/llm-rag-langchain-genai.ipynb)
+  - [Post-Training Optimization of Stable Diffusion Inpainting Model](https://github.com/openvinotoolkit/openvino_notebooks/blob/latest/notebooks/inpainting-genai/inpainting-genai.ipynb)
+  - [Post-Training Optimization of LTX Video Model](https://github.com/openvinotoolkit/openvino_notebooks/blob/latest/notebooks/ltx-video/ltx-video.ipynb)
+  - [Post-Training Optimization of DeepSeek-R1-Distill Model](https://github.com/openvinotoolkit/openvino_notebooks/blob/latest/notebooks/llm-chatbot/llm-chatbot-generate-api.ipynb)
+  - [Post-Training Optimization of Janus DeepSeek-LLM-1.3b Model](https://github.com/openvinotoolkit/openvino_notebooks/blob/latest/notebooks/janus-multimodal-generation/janus-multimodal-generation.ipynb)
+- Known issues:
+  - ...
+
+Compression-aware training:
+
+- Breaking changes:
+  - ...
+- General:
+  - ...
+- Features:
+  - ...
+- Fixes:
+  - ...
+- Improvements:
+  - ...
+- Deprecations/Removals:
+  - ...
+- Tutorials:
+  - ...
+- Known issues:
+  - ...
+
+Deprecations/Removals:
+
+- ...
+
+Requirements:
+
+- Update minimal versin for `numpy` (>=1.24.0).
+- Added to requarements `safetensors` (>=0.4.1).
+- Removed `tqdm`.
+
 ## New in Release 2.14.1
 
 Post-training Quantization: