今天，微软推送了Windows 10 20H1跳跃预览版18865系统更新，本次更新主要是稳定性和Bug修复提升，并未带来明显的新功能，请记住 - 这些构建来自20H1开发分支。我们在20H1工作的一些事情需要更长的准备时间。
重要提示：正如开发周期早期的构建一样，这些构建可能包含可能对某些人来说很痛苦的错误。如果你乘坐这个航班，如果没有在你的电脑上进行干净安装并重新开始，你将无法切换回快速或慢速环。
如果您正在寻找一个完整的外观，请看Inside环有什么内容 - 转到Flight Hub。您还可以在此查看我们的其他文档，包括作为当前开发周期的Insider航班一部分的新功能和更新的完整列表。
一、PC的一般性更改，改进和修复
在光标和指针设置中，当你将鼠标移到不同的颜色选项上时，工具提示将显示。
修复了在Facebook的“编写评论”文本字段中，扫描模式中的讲述人复制命令导致消息“项目无法获得焦点”的问题。
讲述人现在支持Listview中复选框的切换状态。
修复了在Chrome中加载新页面时，讲述人多次读取“已完成加载”的问题。
修复了使用F2编辑时讲述人没有在Excel中读取单元格内容的问题。
修改了讲述人在编辑Excel表格时导航到空单元格时“行尾”的问题。
扫描模式现在将关闭以允许键入微调控件的编辑字段。
解决了讲述人没有从按钮读取咏叹调标签信息的问题。
改进了讲述人的控制回退逻辑，没有可访问的名称。
讲述人现在会在更多控件上显示“无效”或“必需”属性。
修复了在文本编辑区域中使用Ctrl+Home导航到文档开头时，讲述人盲文显示窗口标题而不是盲文显示的第一行的问题。
讲述人盲文用户现在可以通过路由键可靠地激活链接。
解决了在Facebook.com中创建页面时，讲述人Braille没有在盲文显示器上显示有关登录弹出窗口的信息的问题。
解决了讲述人盲文在文本区域的每一行开头显示可访问名称的问题。
修复了一个问题，导致某些用户在升级时创建的某些文件夹的重复空副本。
修复了以下问题：如果你的计算机支持Wi-Fi并且你在任务管理器中将“性能”选项卡设置为默认值，则在“任务管理器”启动时，“性能”选项卡中的Wi-Fi部分似乎已被选中，但显示的详细信息将用于CPU部分。
修复了一个问题，导致一些Insiders遇到意外的BitLocker提示加密某些驱动器，然后无法加密。
二、已知的问题
启动使用反作弊软件的游戏可能会触发绿屏死机（GSOD）。
有些Realtek SD卡读卡器无法正常工作。微软正在调查这个问题。
Creative X-Fi声卡无法正常工作。Creative已发布一些受影响的X-Fi声卡的更新驱动程序。有关特定硬件和任何可用更新的详细信息，请参阅Creative的网站。
三、开发人员的已知问题
如果从SkipAhead安装任何最新版本并切换到Fastring或Slowring，则启用开发人员模式等可选内容将失败。您必须保留在快速环中才能添加/安装/启用可选内容。这是因为可选内容仅安装
在针对特定环批准的构建上。
附英文原版内容：
HelloWindows Insiders, today we are releasing 20H1 Build 18865 to WindowsInsiders who have opted into Skip Ahead. Remember – these builds are from the20H1 development branch. Some things we are working on in 20H1 require a longerlead time.
IMPORTANT: As is normal with builds early in the developmentcycle, these builds may contain bugs that might be painful for some. If youtake this flight, you won’t be able to switch back to the Fast or Slow ringswithout doing a clean-install on your PC and starting over.
Ifyou are looking for a complete look at what build is in which Insider ring –head on over to Flight Hub. You can also check out the rest of ourdocumentation here including a complete list of new features and updates thathave gone out as part of Insider flights for the current development cycle.
General changes, improvements, and fixes for PC
In Cursor pointer setting, tooltips will now show when you move the mouse over the different color options.
We fixed the issue where Narrator’s Copy command in Scan mode in Facebook’s “Write a comment” text field resulted in message “Item cannot take focus”.
Narrator now announces the toggle state of checkbox in Listview.
We fixed the issue where Narrator read “has finished loading” multiple times when loading a new page in Chrome.
We fixed the issue where Narrator did not read cell content in Excel when using F2 to edit.
We fixed the issue where Narrator said “end of line” when navigated to an empty cell while editing a table.
Scan mode will now switch off to allow typing in the edit field of a spinner control.
We fixed the issue where Narrator did not read aria-label information from button.
Improved Narrator’s fallback logic for controls with no accessible name.
Narrator will now present “invalid” or “required” properties on more controls.
We fixed the issue where Narrator Braille showed the window title instead of the first line on the braille display when navigating to the beginning of the document with Ctrl + Home in a text editing area.
Narrator Braille user can now reliably activate links by routing key.
We fixed the issue where Narrator Braille did not render information on the braille display about the login pop up while creating a page in Facebook.com.
We fixed the issue where Narrator Braille would show the accessible name in the beginning of every line in a text area.
We fixed an issue resulting in a duplicate empty copy of certain folders being created on upgrade for some users.
We fixed an issue where, if your computer supported Wi-Fi and you had the Performance tab set as default in Task Manager, on Task Manager launch, the Wi-Fi section in the Performance tab would appear to be selected, but the details displayed would be for the CPU section.
We fixed an issue resulting in some Insiders experiencing unexpected BitLocker prompts to encrypt certain drives, and then subsequently failing to encrypt.
Known issues
Launching games that use anti-cheat software may trigger a bugcheck (GSOD).
Some Realtek SD card readers are not functioning properly. We are investigating the issue.
Creative X-Fi sound cards are not functioning properly. Creative has released updated drivers for some affected X-Fi sound cards.
Please refer to Creative’s website for details on your particular hardware and any available updates.
Known issues for Developers
If you install any of the recent builds from the Skip Ahead and switch to either the Fast ring or the Slow ring, optional content such as enabling developer mode will fail. You will have to remain in the Fast ring to add/install/enable optional content. This is because optional content will only install on builds approved for specific rings.
