Angular 5.2.0-beta.1 和 5.1.2 已发布，5.2.0-beta.1 主要是新增了一些特性和修复 bug，5.1.2 主要是修复了部分 bug，具体如下：
5.2.0-beta.1
Bug 修复
compiler: generate the correct imports for summary type-check
forms: avoid producing an error with hostBindingTypeCheck
特性
compiler: allow ngIf to use the ngIf expression directly as a guard
router: add "paramsInheritanceStrategy" router configuration option
5.1.2
Bug 修复
common: fix a Closure compilation issue.
compiler: make tsx file aot compatible
compiler: report an error for recursive module references
compiler-cli: do not emit invalid .metadata.json files
compiler-cli: do not force type checking on .js files
service-worker: check for updates on navigation
upgrade: replaces get/setAngularLib with get/setAngularJSGlobal
软件详情：https://github.com/angular/angular/blob/master/CHANGELOG.md
下载地址：https://github.com/angular/angular/releases
来自:开源中国社区
