<svg>
  <image x="20" y="20" width="300" height="80"  xlink:href="image.png" />
</svg>

Using beta.0 the above example results in the attributes x, y, width, height and xlink:href being created with the namespace http://www.w3.org/1999/xlink.

see #5989 (comment) for details

/cc @gionkunz