SDK doc change: add a note in download page for those updating tools only.

    </a>

  </div>

?>

  <p>Welcome! If you are new to the Android SDK, please read the <a href="#quickstart">Quick Start</a>,

  below, for an overview of how to install and set up the SDK.</p>

  <p>Welcome Developers! If you are new to the Android SDK, please read the <a

href="#quickstart">Quick Start</a>, below, for an overview of how to install and

set up the SDK. </p>

  <p>If you are already using the Android SDK and would like to update to the

latest tools or platforms, please use the <em>Android SDK and AVD Manager</em>

to get the components, rather than downloading a new SDK package.</p>

  <table class="download">

    <tr>