# OS平台行为变更说明

* **[总览](https://developer.huawei.com/consumer/cn/doc/harmonyos-releases/changelogs-overview-502-beta1)**   
* **[OS平台API行为的变更](https://developer.huawei.com/consumer/cn/doc/harmonyos-releases/changelogs-for-all-apps-b123sp16)**   
* **[UX样式或效果的变更](https://developer.huawei.com/consumer/cn/doc/harmonyos-releases/changelogs-ux-b123sp16)**