As has been the pattern recently, the HTC Mega has not even been announced yet, and already its ROM has found its way onto XDA-Developers. Taken from there has been the latest version of HTCâ€™s TouchFLo2D, its version of its UI designed for low-powered QVGA devices.
The UI bears a distinct HTC Sense flavour, but in essence appears similar to what the original TouchFlo2D featured. Apparently the software works flawlessly in Windows Mobile 6.5, suggesting to some that the HTC Mega will be coming with that platform from the start.
Download the package from this XDA-Developer thread here.