--- a/master/painting.html	Wed May 22 17:15:28 2013 -0700
+++ b/master/painting.html	Thu May 23 10:53:25 2013 +0200
@@ -3719,6 +3719,8 @@
 
 <h3 id="ImageRendering">The <span class="property">'image-rendering'</span> property</h3>
 
+<p class="note">The <a href="http://dev.w3.org/csswg/css-images/#image-rendering">CSS Image Values and Replacement Conent Module Level 4</a> may in the future redefine this property. In particular it should allow the choice between smoothing and keeping a pixelated look when upscaling.</p>
+
 <table class="propdef">
   <tr>
     <th>Name:</th>