The new version of Sense also has a spruced-up Walls system. Rather than having to flick back and forth between your walls, as you do in the stock Android operating system, you can flick the EVO 3D's screen to make the walls spin. The effect is a bit reminiscent of a carousel.
You'll find a clutch of new widgets in Sense, but my favorite is the gorgeous new Weather widget. HTC has a nice tradition of creating visual weather apps, and it is cool to see the company continue to improve them. They might not always be pretty, but they sure are dramatic.