Angular 5.2.0-beta.0 和 5.1.1 已发布，5.2.0-beta.0 主要是新增了一些特性，5.1.1 主要是修复了部分 bug，具体如下： 5.2.0-beta.0 特性 animations: re-introduce support for transition matching functions (#20723) (590d93b), closes #18959 compiler: add a pseudo $any() function to disable type checking (#20876) (70cd124) compiler: narrow types of expressions used in *ngIf (#20702) (e7d9cb3) core: add source to StaticInjectorError message (#20817) (b7738e1), closes #19302 forms: allow nulls on setAsyncValidators (#20327) (d41d2c4), closes #20296 5.1.1 Bug 修复 animations: ensure multi-level route leave animations are queryable (#20787) (d09d497), closes #19807 animations: ensure the web-animations driver properly handles empty keyframes (#20648) (c3e8731), closes #15858 animations: properly recover and cleanup DOM when CD failures occur (#20719) (e6a2805), closes #19093 animations: support webkit-based vendor prefixes for prop validations (#19055) (501f01e), closes #18921 bazel: don't equate moduleName with fileName (#20895) (0c9f7b0) compiler: support referencing enums in namespaces (#20947) (d6da798), closes #18170 compiler-cli: disable checkTypes in emit. (#20828) (160a154) compiler-cli: fix swallowed Error messages (#20846) (6727336) compiler-cli: merge @fileoverview comments. (#20870) (be9a737) router: NavigatonError and NavigationCancel should be emitted after resetting the URL (#20803) (baeec4d) 详情请参阅更新日志地址。 源码下载：https://github.com/angular/angular/releases Angular 5.2.0-beta.0 和 5.1.1 发布，Web 前端框架下载地址
