Update changelog with comfyui v0.3.47 (#309)

* Add/update changelog/index.mdx

* Add/update zh-CN/changelog/index.mdx

* Update zh changelog

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Co-authored-by: ComfyUI Wiki <[email protected]>

Author: coderfromthenorth93

changelog/index.mdx

@@ -4,6 +4,29 @@ description: "Track ComfyUI's latest features, improvements, and bug fixes"
 icon: "clock-rotate-left"
 ---
 
+<Update label="v0.3.47" description="July 30, 2025">
+
+**Memory Optimization & Large Model Performance**
+
+This release focuses on critical memory optimizations for large model workflows, particularly improving performance with WAN 2.2 models and enhancing VRAM management for high-end systems:
+
+## WAN 2.2 Model Optimizations
+- **Reduced Memory Footprint**: Eliminated unnecessary memory clones in WAN 2.2 VAE operations, significantly reducing memory usage during image encoding/decoding workflows
+- **5B I2V Model Support**: Major memory optimization for WAN 2.2 5B image-to-video models, making these large-scale models more accessible for creators with limited VRAM
+
+## Enhanced VRAM Management
+- **Windows Large Card Support**: Added extra reserved VRAM allocation for high-end graphics cards on Windows, preventing system instability during intensive generation workflows
+- **Better Memory Allocation**: Improved memory management for users working with multiple large models simultaneously
+
+## Workflow Performance Benefits
+- **Faster VAE Processing**: WAN 2.2 VAE operations now run more efficiently with reduced memory overhead, enabling smoother image generation pipelines
+- **Stable Large Model Inference**: Enhanced stability when working with billion-parameter models, crucial for professional AI art creation and research workflows
+- **Improved Batch Processing**: Memory optimizations enable better handling of batch operations with large models
+
+These targeted optimizations make ComfyUI more reliable for professional workflows involving large-scale models, particularly benefiting creators working with cutting-edge image-to-video generation and high-resolution image processing tasks.
+
+</Update>
+
 <Update label="v0.3.46" description="July 28, 2025">
 
 **Hardware Acceleration & Audio Processing Improvements**
@@ -134,7 +157,6 @@ This release delivers significant improvements to sampling algorithms and model
 These improvements make ComfyUI more robust for production workflows while expanding creative possibilities for AI artists working with advanced sampling techniques and model control systems.
 
 </Update>
-
 <Update label="v0.3.43" description="June 30, 2025">
 
 **Enhanced Model Support & Workflow Reliability**

zh-CN/changelog/index.mdx

@@ -4,6 +4,28 @@ description: "跟踪 ComfyUI 的最新功能、改进和错误修复"
 icon: "clock-rotate-left"
 ---
 
+<Update label="v0.3.47" description="2025年7月30日">
+
+**内存优化与大模型性能**
+
+本次发布专注于大模型工作流的关键内存优化，特别是改进了 WAN 2.2 模型的性能，并增强了高端显卡的 VRAM 管理：
+
+## WAN 2.2 模型优化
+- **减少内存占用**：去除了 WAN 2.2 VAE 操作中不必要的内存克隆，显著减少了图像编码/解码工作流中的内存使用
+- **5B I2V 模型支持**：对 WAN 2.2 5B 图像到视频模型进行内存优化，使这些模型对 VRAM 有限的创作者更加易用
+
+## 增强的 VRAM 管理
+- **Windows 大显卡支持**：为 Windows 上的高端显卡增加了额外的保留 VRAM 分配，防止在密集生成工作流中出现系统不稳定
+- **更好的内存分配**：改进了同时使用多个大模型的用户的内存管理
+
+## 工作流性能优势
+- **更快的 VAE 处理**：WAN 2.2 VAE 操作现在运行更高效，内存开销更少，实现更流畅的图像生成管道
+- **稳定的大模型推理**：增强了处理数十亿参数模型时的稳定性
+- **改进的批处理**：内存优化使大模型的批操作处理能力更强
+
+这些针对性优化使 ComfyUI 在涉及大体量模型的专业工作流中更加可靠。
+
+</Update>
 <Update label="v0.3.46" description="2025年7月28日">
 
 **硬件加速和音频处理改进**