苹果在今年推出OS X Yosemite系统时，首次采用了公众测试（Public Beta）版的模式。据称有超过100万的消费者用户报名并参与了该测试，效果十分不错。在以往新版Mac系统往往仅面向开发者及选定的苹果爱好者用户推 送Beta测试版，由于公众测试版的尝试非常成功，苹果今日向参与Yosemite测试的用户发送了感谢邮件，并表示参与Beta计划的用户将在系统更新 发布时继续收到Beta测试版本。

Thanks for participating in the OS X Yosemite Beta Program. As you know, OS X Yosemite brings an elegant redesign, continuity features for using your Mac, iPhone, and iPad together, and major enhancements to the apps you use every day. And it's now available for free from the Mac App Store.

Please install the release version of OS X Yosemite. As a member of the OS X Beta Program, you will continue to be offered beta versions of OS X software updates on any Mac that you installed the beta on. However, if you prefer to stop receiving beta updates, please click here.

邮件中首先感谢了用户参与到OS X Yosemite的Beta测试计划，新版OS X Yosemite带来了全新的界面设计，并带来了Continuity（连续性）特性，增强了Mac，iPhone，iPad设备之间的互动及协同性。

此外还提醒用户OS X Yosemite最终正式版已经发布，可在Mac App Store上免费更新，请用户注意安装。由于参与了OS X Beta计划，你们将会继续接收到OS X系统更新的最新beta测试版。如果希望停止接受测试更新，可点击连接停止接收。