In SharePoint 2013, there's a new feature that will make viewing images on mobile devices MUCH better.  It basically auto-sizes and renders images for different devices and stores them using BLOB cache.  You can even crop the images so they display differently on each device type.

For more information, check out this post by SharePoint MVP Waldek Mastykarz: <a href="http://blog.mastykarz.nl/image-renditions-sharepoint-2013/">http://blog.mastykarz.nl/image-renditions-sharepoint-2013</a>

What enhancements in SharePoint 2013 for mobile devices are you most excited about?