HTC keeps tinkering on their in-house user interface, Sense. In the new version of the software, it looks like you'll be able to add homescreens to the zoom out function, cycle back and forth through weather animations and add widgets to the side of your screen. Other than that, though, it looks like the same UI as before.
If you want to get a peak at many of the new features gracing HTC devices in the near future, then check out this video from Japanese TV. It displays many of the changes HTC has packed into Sense version 3.5, which we're hoping to bring to you live from the IFA later this week.