This is HTC "Quietly Brilliant" animation for nearly all HTC touch screen devices. You can download it no matter what screen resolution (WVGA, VGA, QVGA & WQVGA) you have or whether it runs Windows Mobile 6.1 or 6.5.
It comes in two flavors, a simple one come with only the Quietly Brilliant HTC animation without welcomehead and a full version which also contains the Operating System splash with the Windows Phone logo. Download the one you like and install it to your Device and Soft Reset.
Get more information and download link here XDA Developer.
* Note: Click image to see the animation.