Update Windows guide regarding LNL support (#12178)

* Update windows guide regarding LNL support

* Update based on comments

docs/mddocs/Overview/install_gpu.md

@@ -44,7 +44,33 @@ We recommend using [Miniforge](https://conda-forge.org/download/) to create a py
 > [!IMPORTANT]
 > ``ipex-llm`` is tested with Python 3.9, 3.10 and 3.11. Python 3.11 is recommended for best practices.
 
-The easiest ways to install `ipex-llm` is the following commands, choosing either US or CN website for `extra-index-url`:
+The easiest ways to install `ipex-llm` is the following commands.
+
+- For **Intel Core™ Ultra Series 2 (a.k.a. Lunar Lake) with Intel Arc™ Graphics**:
+
+   Choose either US or CN website for `extra-index-url`:
+
+   - For **US**:
+
+      ```cmd
+      conda create -n llm python=3.11 libuv
+      conda activate llm
+
+      pip install --pre --upgrade ipex-llm[xpu_lnl] --extra-index-url --extra-index-url https://pytorch-extension.intel.com/release-whl/stable/lnl/us/
+      ```
+
+   - For **CN**:
+
+      ```cmd
+      conda create -n llm python=3.11 libuv
+      conda activate llm
+
+      pip install --pre --upgrade ipex-llm[xpu_lnl] --extra-index-url --extra-index-url https://pytorch-extension.intel.com/release-whl/stable/lnl/cn/
+      ```
+
+- For **other Intel iGPU and dGPU**:
+
+   Choose either US or CN website for `extra-index-url`:
 
    - For **US**:
 
@@ -68,6 +94,28 @@ The easiest ways to install `ipex-llm` is the following commands, choosing eithe
 
 If you encounter network issues when installing IPEX, you can also install IPEX-LLM dependencies for Intel XPU from source archives. First you need to download and install torch/torchvision/ipex from wheels listed below before installing `ipex-llm`.
 
+- For **Intel Core™ Ultra Series 2 (a.k.a. Lunar Lake) with Intel Arc™ Graphics**:
+
+   Download the wheels on Windows system:
+
+   ```
+   wget https://intel-extension-for-pytorch.s3.amazonaws.com/ipex_stable/lnl/torch-2.3.1%2Bcxx11.abi-cp311-cp311-win_amd64.whl
+   wget https://intel-extension-for-pytorch.s3.amazonaws.com/ipex_stable/lnl/torchvision-0.18.1%2Bcxx11.abi-cp311-cp311-win_amd64.whl
+   wget https://intel-extension-for-pytorch.s3.amazonaws.com/ipex_stable/lnl/intel_extension_for_pytorch-2.3.110%2Bxpu-cp311-cp311-win_amd64.whl
+   ```
+
+   You may install dependencies directly from the wheel archives and then install `ipex-llm` using following commands:
+
+   ```
+   pip install torch-2.3.1+cxx11.abi-cp311-cp311-win_amd64.whl
+   pip install torchvision-0.18.1+cxx11.abi-cp311-cp311-win_amd64.whl
+   pip install intel_extension_for_pytorch-2.3.110+xpu-cp311-cp311-win_amd64.whl
+
+   pip install --pre --upgrade ipex-llm[xpu_lnl]
+   ```
+
+- For **other Intel iGPU and dGPU**:
+
    Download the wheels on Windows system:
 
    ```

docs/mddocs/Quickstart/install_windows_gpu.md

@@ -45,17 +45,49 @@ conda activate llm
   
 ## Install `ipex-llm`
 
-With the `llm` environment active, use `pip` to install `ipex-llm` for GPU. Choose either US or CN website for `extra-index-url`:
+With the `llm` environment active, use `pip` to install `ipex-llm` for GPU:
+
+- For **Intel Core™ Ultra Series 2 (a.k.a. Lunar Lake) with Intel Arc™ Graphics**:
+
+   Choose either US or CN website for `extra-index-url`:
 
    - For **US**:
 
-  ```bash
+      ```cmd
+      conda create -n llm python=3.11 libuv
+      conda activate llm
+
+      pip install --pre --upgrade ipex-llm[xpu_lnl] --extra-index-url --extra-index-url https://pytorch-extension.intel.com/release-whl/stable/lnl/us/
+      ```
+
+   - For **CN**:
+
+      ```cmd
+      conda create -n llm python=3.11 libuv
+      conda activate llm
+
+      pip install --pre --upgrade ipex-llm[xpu_lnl] --extra-index-url --extra-index-url https://pytorch-extension.intel.com/release-whl/stable/lnl/cn/
+      ```
+
+- For **other Intel iGPU and dGPU**:
+
+   Choose either US or CN website for `extra-index-url`:
+
+   - For **US**:
+
+      ```cmd
+      conda create -n llm python=3.11 libuv
+      conda activate llm
+
       pip install --pre --upgrade ipex-llm[xpu] --extra-index-url https://pytorch-extension.intel.com/release-whl/stable/xpu/us/
       ```
 
    - For **CN**:
 
-  ```bash
+      ```cmd
+      conda create -n llm python=3.11 libuv
+      conda activate llm
+
       pip install --pre --upgrade ipex-llm[xpu] --extra-index-url https://pytorch-extension.intel.com/release-whl/stable/xpu/cn/
       ```