Rather than being a huge update, this is more of an indication that HTC is working on customizations for Windows Phone 7. We certainly like WP7 simplistic take on interface, but at the same time we would love some more variety in the looks.
Many have been missing the full visual candy of HTC's Sense UI on Windows Phone 7 and currently the HTC Hub is the only solution. The idea behind preventing custom interfaces, such as the HTC Sense UI, from appearing on Windows Phone 7 has much to do with preventing segmentation. This way Microsoft can roll out updates directly to customers without having to rely on decisions from customization developers or carriers. The unified user experience is also a considerable advantage. But let's wait and see if HTC manages to be the first to bypass it in the future.