Update changelog with comfyui v0.3.68 (#530)

* Add/update changelog/index.mdx

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

* Simplify changelog

---------

Co-authored-by: ComfyUI Wiki <contact@comfyui-wiki.com>

Author: coderfromthenorth93

changelog/index.mdx

@@ -4,6 +4,33 @@ description: "Track ComfyUI's latest features, improvements, and bug fixes"
 icon: "clock-rotate-left"
 ---
 
+<Update label="v0.3.68" description="November 5, 2025">
+
+**Performance & Memory Optimizations**
+- Introduced **Mixed Precision Quantization System** for optimized model loading
+- Added **RAM Pressure Cache Mode** for intelligent memory management under resource constraints
+- Accelerated model offloading using pinned memory with automatic low-RAM hardware detection
+- Enhanced FP8 operations: reduced memory usage and fixed torch.compile performance regressions
+- Improved async offload speeds and resolved race conditions
+
+**New Nodes & Execution Features**
+- **ScaleROPE Node**: Rope scaling support for WAN and Lumina models
+- Enhanced subgraph execution allowing multiple runs within single workflows
+- Improved caching system with proper handling of bytes data and None outputs
+
+**API Node Enhancements**
+- Migrated API nodes to V3 client architecture: Luma, Minimax, Pixverse, Ideogram, StabilityAI, Pika, Recraft, Hypernetwork, OpenAI
+- Extended LTXV API nodes with 12s-20s duration options
+- Fixed img2img operations in DALL-E 2 node
+- Enhanced Rodin3D nodes to return proper relative paths
+
+**Updates**
+- Embedded documentation updated to v0.3.1
+- Workflow templates updated to v0.2.11
+- Fixed Windows pinned memory allocation issues
+
+</Update>
+
 <Update label="v0.3.67" description="October 28, 2025">
 
 **API Nodes**
@@ -76,7 +103,6 @@ icon: "clock-rotate-left"
 - Fixed WAN2.2 cache VRAM leak
 
 </Update>
-
 <Update label="v0.3.64" description="October 8, 2025">
 
 **API Nodes**

zh-CN/changelog/index.mdx

@@ -1,9 +1,36 @@
 ---
 title: "更新日志"
-description: "追踪ComfyUI的最新功能、改进和错误修复"
+description: "跟踪ComfyUI的最新功能、改进和错误修复"
 icon: "clock-rotate-left"
 ---
 
+<Update label="v0.3.68" description="2025年11月5日">
+**模型支持**
+- 支持 [ChronoEdit 14B](https://research.nvidia.com/labs/toronto-ai/chronoedit/) 模型
+
+**性能与内存优化**
+- 引入**混合精度量化系统**，优化模型加载
+- 新增**RAM压力缓存模式**，在资源受限条件下智能管理内存
+- 使用固定内存加速模型卸载，支持自动低RAM硬件检测
+- 增强FP8操作：减少内存使用并修复torch.compile性能回归问题
+- 改进异步卸载速度，解决竞争条件问题
+- 修复Windows固定内存分配问题
+
+**新节点与执行功能**
+- **ScaleROPE节点**：支持WAN和Lumina模型的rope缩放
+- 增强子图执行功能，允许在单个工作流中多次运行
+- 改进缓存系统，正确处理字节数据和None输出
+
+**API节点增强**
+- 扩展LTXV API节点，支持12秒-20秒时长选项
+- 修复DALL-E 2节点中的img2img操作
+- 增强Rodin3D节点，返回正确的相对路径
+
+**更新**
+- 更新核心节点文档翻译（繁体中文，阿拉伯语，土耳其语）
+- 工作流模板更新至v0.2.11
+
+</Update>
 <Update label="v0.3.67" description="2025年10月28日">
 
 **API 节点**