As you'll see in the video, HTC has built a special tablet version of its Sense UI on top of Android's Gingerbread (2.4) OS. It turns the rather flat-looking Gingerbread interface into a 3D environment with a lot of movement. For example, the weather app shows a beautiful shot of clouds floating by. When scrolling through titles in the Books app, it looks like you're spinning a virtual cube with books on each surface.

HTC reaches back to yesteryear by including a pen stylus with the Flyer. Don't worry, you don't need it to operate the device. The pen is used mainly in the Notes app: you can draw out ideas whiteboard style-and talk while you're doing it-and the app records everything that happens. Or you can just back up the whole thing to Evernote.

You can also use the stylus to make comments on web pages or in e-books, and share them with your friends. Pretty cool.

The tablet will become available in the second quarter of this year, and wireless carriers in the US will make their own announcements later about launch dates and prices.