<h3>Live Theme Previews</h3>
<h4>Try on New Themes</h4>
Gone are the days of rushing to update your header, 
background, and the like as soon as you activate a new 
theme. You can now customize these options <strong>before</strong> activating a new theme. Note: This feature is 
available for installed themes only.
<h4>Customize Current Theme</h4>
Satisfy your curiosity and try on a fresh coat of paint --- you 
can also use the live preview mode to customize your current 
theme. Look for the Customize button on the Themes screen.

<h3>Custom Headers</h3>
<h4>Flexible Sizes</h4>
You can decide for yourself how tall or wide your custom header image should be. From now on, themes will provide a recommended image size for custom headers rather than a fixed requirement. Note: this feature requires <a href="link to codex?">theme support</a>.
<h4>Choose from Media Library</h4>
Tired of re-uploading the same custom header image every time you check out a new theme? Now you can choose header images from your media library for easier customization.


<h3>Image Captions</h3>
<h4>HTML Support</h4>
Basic HTML support has been added to the caption field in the image uploader. This allows you to add links --- great for photo credits or licensing details --- and basic formatting such as bold and italicized text.