We resolved that this will always return an Element.

Fixes https://www.w3.org/Bugs/Public/show_bug.cgi?id=17201

Overview.src.html

@@ -8360,7 +8360,7 @@ <h3>Interface <code>HTMLCollection</code></h3>
 <pre class=idl>interface <dfn>HTMLCollection</dfn> {
   readonly attribute unsigned long <span title=dom-HTMLCollection-length>length</span>;
   getter <span>Element</span>? <span title=dom-HTMLCollection-item>item</span>(unsigned long <var title>index</var>);
-  getter object? <span title=dom-HTMLCollection-namedItem>namedItem</span>(DOMString <var title>name</var>); // only returns <code>Element</code>
+  getter <span>Element</span>? <span title=dom-HTMLCollection-namedItem>namedItem</span>(DOMString <var title>name</var>);
 };</pre>
 
 <dl class=domintro>

dom-core.html

@@ -11,7 +11,7 @@
 <p><a class="logo" href="//www.whatwg.org/"><img alt="WHATWG" height="100" src="//resources.whatwg.org/logo-dom.svg" width="100"></a></p>
 
 <h1>DOM</h1>
-<h2 class="no-num no-toc" id="living-standard-—-last-updated-7-march-2013">Living Standard — Last Updated 7 March 2013</h2>
+<h2 class="no-num no-toc" id="living-standard-—-last-updated-25-march-2013">Living Standard — Last Updated 25 March 2013</h2>
 
 <dl>
  <dt>This Version:
@@ -45,7 +45,7 @@ <h2 class="no-num no-toc" id="living-standard-—-last-updated-7-march-2013">Liv
 <p class="copyright"><a href="http://creativecommons.org/publicdomain/zero/1.0/" rel="license"><img alt="CC0" src="http://i.creativecommons.org/p/zero/1.0/80x15.png"></a>
 To the extent possible under law, the editors have waived all copyright and
 related or neighboring rights to this work. In addition, as of
-7 March 2013, the editors have made this specification available
+25 March 2013, the editors have made this specification available
 under the
 <a href="http://www.openwebfoundation.org/legal/the-owf-1-0-agreements/owfa-1-0" rel="license">Open Web Foundation Agreement Version 1.0</a>,
 which is available at
@@ -5779,7 +5779,7 @@ <h3 id="interface-characterdata"><span class="secno">5.9 </span>Interface <code>
 
 
 <h3 id="interface-text"><span class="secno">5.10 </span>Interface <code><a href="#text">Text</a></code></h3>
-<pre class="idl">[<a href="#dom-text" title="dom-Text">Text</a>(optional DOMString <var title="">data</var> = "")]
+<pre class="idl">[<a href="#dom-text" title="dom-Text">Constructor</a>(optional DOMString <var title="">data</var> = "")]
 interface <dfn id="text">Text</dfn> : <a href="#characterdata">CharacterData</a> {
   <a href="#text">Text</a> <a href="#dom-text-splittext" title="dom-Text-splitText">splitText</a>(unsigned long <var title="">offset</var>);
   readonly attribute DOMString <a href="#dom-text-wholetext" title="dom-Text-wholeText">wholeText</a>;
@@ -8386,7 +8386,7 @@ <h3 id="interface-htmlcollection"><span class="secno">8.2 </span>Interface <code
 <pre class="idl">interface <dfn id="htmlcollection">HTMLCollection</dfn> {
   readonly attribute unsigned long <a href="#dom-htmlcollection-length" title="dom-HTMLCollection-length">length</a>;
   getter <a href="#element">Element</a>? <a href="#dom-htmlcollection-item" title="dom-HTMLCollection-item">item</a>(unsigned long <var title="">index</var>);
-  getter object? <a href="#dom-htmlcollection-nameditem" title="dom-HTMLCollection-namedItem">namedItem</a>(DOMString <var title="">name</var>); // only returns <code><a href="#element">Element</a></code>
+  getter <a href="#element">Element</a>? <a href="#dom-htmlcollection-nameditem" title="dom-HTMLCollection-namedItem">namedItem</a>(DOMString <var title="">name</var>);
 };</pre>
 
 <dl class="domintro">