doc: add 4.0 in readme

README.md

@@ -17,9 +17,9 @@ An out-of-box UI solution for enterprise applications as a React boilerplate.
 - FAQ: http://pro.ant.design/docs/faq
 - Mirror Site in China: http://ant-design-pro.gitee.io
 
-## 2.0 Released Now! 🎉🎉🎉
+## 4.0 Released Now! 🎉🎉🎉
 
-[Announcing Ant Design Pro 2.0.0](https://medium.com/ant-design/beautiful-and-powerful-ant-design-pro-2-0-release-51358da5af95)
+[Announcing Ant Design Pro 4.0.0](https://medium.com/ant-design/ant-design-pro-v4-is-here-6f23098ae9d9)
 
 ## Translation Recruitment :loudspeaker:
 

README.zh-CN.md

@@ -17,6 +17,10 @@
 - 常见问题：http://pro.ant.design/docs/faq-cn
 - 国内镜像：http://ant-design-pro.gitee.io
 
+## 现在我们发布了 4.0! 🎉🎉🎉
+
+[Announcing Ant Design Pro 4.0.0](https://zhuanlan.zhihu.com/p/67498559)
+
 ## 特性
 
 - :bulb: **TypeScript**: 应用程序级 JavaScript 的语言