te-actions call-to-action"><a class=entry href=/v1.21/zh/news/releases/1.12.x/announcing-1.12/upgrade-notes/><h5>升级之前</h5><p>升级前须知。</p></a><a class=entry href=https://github.com/istio/istio/releases/tag/1.12.9><h5>下载</h5><p>下载安装该发行版。</p></a><a class=entry href=https://archive.istio.io/v1.12/docs><h5>文档</h5><p>访问该发行版的文档。</p></a><a class=entry href=https://github.com/istio/istio/compare/1.12.8...1.12.9><h5>代码变更</h5><p>查看源码变更