Update news in the readme

Author: BillHuang2001

README.md

@@ -46,7 +46,7 @@
 
 
 ## 🔥 News
-- [2025-03-31] Released **EvoX 1.2.0** - 🚀 EvoX v1.2.0 release is now available, featuring the new Mujoco Playground and an official tutorial! [[Details](https://evox.group/index.php?m=home&c=View&a=index&aid=157)]
+- [2025-05-13] Released **EvoX 1.2.1** - 🚀 EvoX v1.2.1 release is now available, featuring the new Mujoco Playground and an official tutorial! [[Details](https://evox.group/index.php?m=home&c=View&a=index&aid=157)]
 - [2025-02-03] Released **EvoRL**: A GPU-accelerated framework for **Evolutionary Reinforcement Learning**, powered by **JAX** ! [[Paper](https://arxiv.org/abs/2501.15129)] [[Code](https://github.com/EMI-Group/evorl)]
 - [2025-01-30] Released **EvoGP**: A GPU-accelerated framework for **Genetic Programming**, powered by **PyTorch** & **CUDA**! [[Paper](http://arxiv.org/abs/2501.17168)] [[Code](https://github.com/EMI-Group/evogp)]
 - [2025-01-14] Released **EvoX 1.0.0** - now fully compatible with **PyTorch**, with full `torch.compile` support! Users of the previous **JAX-based version** can access it on the **v0.9.0 branch**.

README_ZH.md

@@ -44,7 +44,7 @@
 ---
 
 ## 🔥 新闻
-- [2025-03-18] 发布 **EvoX 1.2.0** - 🚀 EvoX v1.2.0 发布，新增 Mujoco Playground 及官方教程！ [[更新内容](https://evox.group/index.php?m=home&c=View&a=index&aid=151)]
+- [2025-05-13] 发布 **EvoX 1.2.1** - 🚀 EvoX v1.2.1 发布，新增 Mujoco Playground 及官方教程！ [[更新内容](https://evox.group/index.php?m=home&c=View&a=index&aid=151)]
 - [2025-02-03] 发布 **EvoRL**：基于 **JAX** 的 GPU 加速 **进化强化学习** 框架！[[论文](https://arxiv.org/abs/2501.15129)] [[代码](https://github.com/EMI-Group/evorl)]
 - [2025-01-30] 发布 **EvoGP**：基于 **PyTorch** & **CUDA** 的 GPU 加速 **遗传编程** 框架！[[论文](http://arxiv.org/abs/2501.17168)] [[代码](https://github.com/EMI-Group/evogp)]
 - [2025-01-14] 发布 **EvoX 1.0.0**，全面兼容 **PyTorch**，全面接入`torch.compile`！使用 **JAX 版本** 的用户可在 **v0.9.0 分支** 获取。