Clarify that preview system images can receive ota updates.

<ul>

  <li><strong>Enroll the device in automatic OTA system updates</strong> through the

  Android Beta program. Once enrolled, your device will receive regular

  <a href="https://g.co/androidbeta">Android Beta Program</a>. Once enrolled, your device will receive regular

  over-the-air (OTA) updates of all milestone builds in the N Developer Preview. This

  approach is recommended because it lets you seamlessly transition from your current

  environment through the various releases of the N Developer Preview.</li>

  <li><strong>Download a Developer Preview system image and flash the device</strong>.

  OTA updates are not provided automatically for devices that you flash manually. This

  approach is recommended if you need precise control over the test environment or need

  to reinstall frequently, such as for automated testing.  </li>

  OTA updates are not provided automatically for devices that you flash manually, but

  you can enroll those devices in Android Beta Program to get OTA updates. </li>

</ul>

<h3 id="ota">Enroll the device in automatic OTA updates</h3>

<p>

  If you have access to a supported device (see the list in the Downloads

  table), you can receive over-the-air updates to preview versions of Android

  by enrolling that device in the Android Beta Program. These updates are

  by enrolling that device in the <a href="https://g.co/androidbeta">Android Beta Program</a>. These updates are

  automatically downloaded and will update your device just like official

  system updates.

</p>

<p>

  At any time you can download the latest Developer Preview system image and

  manually flash it to your device. See the table below to download the system

  image for your test device.

  image for your test device. Manually flashing a device is useful if you need

  precise control over the test environment or need to reinstall frequently,

  such as for automated testing. 

</p>

<p>

<!-- You can flash by ota or system image --><p>

  Installing a system image on a device <strong>removes all data from the

  device</strong>, so you should back up your data first.

</p>

  to flash the image onto your device.

</p>

<p class="note"><strong>Note:</strong>

  Manually flashed system images <em>will not</em>

  automatically receive subsequent OTA updates to later Developer Preview

<p>

  Manually flashed system images <strong>do not

  automatically receive OTA updates</strong> to later Developer Preview

  milestone builds. Make sure to keep your environment up-to-date and flash a

  new system image at each Developer Preview milestone.

</p>

<p>

  If you decide you want to get OTA updates after manually flashing a device, 

  all you need to do is enroll the device in the <a href="https://g.co/androidbeta">Android

  Beta Program</a>. You can enroll the device at any time to receive the next Preview

  update over the air. 

</p>

<table>

  <tr>

    <th scope="col">Device</th>

    </a>

    <ul class="dac-actions">

      <li class="dac-action">

        <a class="dac-action-link" href="{@docRoot}preview/bug">

        <a class="dac-action-link" href="https://developer.android.com/preview/bug">

          <i class="dac-action-sprite dac-sprite dac-auto-chevron-large"></i>

          Report an issue

        </a>

  <div class="wrap dac-offset-parent">

    <div class="actions">

      <div><a href="{@docRoot}preview/bug">

      <div><a href="https://developer.android.com/preview/bug">

        <span class="dac-sprite dac-auto-chevron-large"></span>

        Report an issue

      </a></div>

<p>

  Two primary support channels are available to you when developing and testing

  with the Android N Developer Preview: Please file bugs at <a href=

  "{@docRoot}preview/bug">https://developer.android.com/preview/bug</a> for

  "https://developer.android.com/preview/bug">https://developer.android.com/preview/bug</a> for

  device-specific, system, and Google App bugs. For issues in other apps,

  please contact the developer directly.

</p>

  </li>

</ul>

<h4 id="microphone">Microphone</h4>

<ul>

   <li>The system may incorrect persists the microphone mute state across apps and reboots. If you mute the microphone in an app and the state is persisted, open any app that has microphone mute controls and unmute the microphone.</li>

</ul>

<h4 id="ui">System UI</h4>

<ul>

    </ul>

  </li>

</ul>

<h4 id="keyboard">Keyboard</h4>

<ul>

  </li>

</ul>

<h4 id="accessibility">Accessibility</h4>

<ul>

  <li>TalkBack exhibits issues with features including Notifications, Quick

  Settings Tiles and Multi-window display that may cause system crashing or

  lack of spoken feedback from TalkBack. Future releases of the preview will

  address these issues.

  </li>

   <li>TalkBack exhibits issues with features including Notifications, Quick Settings Tiles and Multi-window display that may cause system crashing or lack of spoken feedback from TalkBack. Future releases of the preview will address these issues.</li>

</ul>

<h3 id="device-sp">Device-Specific Notes and Issues</h3>

<h4 id="player">Nexus Player</h4>

<ul>

  <li>Video playback, app compatibility and stability issues are expected on

  Nexus Player in this release of the Preview.

  </li>

<li>Video playback, app compatibility and stability issues are expected on Nexus Player in this release of the Preview.</li>

</ul>

<h4 id="pixelc">Pixel C</h4>

<ul>

  <li>Multi-window resizing may cause crashing.

  </li>

<li>Multi-window resizing may cause crashing.</li>

</ul>