HTC ROM developer @LlabTooFeR seems to be confirming the existence of a Quad HD display and Sense 8.0 by unveiling what he calls the "first Sense 8.0 wallpaper for Quad HD screens." The wallpaper is similar to what we've seen in a previously leaked HTC 10 render, and will most likely be one of the new phone's built-in wallpapers. You can download it on your device by tapping / right clicking on it below (mind you, this is a 2880 x 2560 pixels image).
While we don't know exactly what Sense 8.0 UI will bring, we have a pretty good idea about the hardware of the HTC 10 (known until some time ago as One M10). The smartphone is supposed to be powered by a Qualcomm Snapdragon 820 processor paired with 4 GB of RAM. HTC already let the world know that the upcoming handset will offer "world first, world class, front and back" cameras, plus "boom" sound. Other features should include a fingerprint scanner embedded in the home button, up to 64 GB of internal memory (likely expandable), and a 3000 mAh battery.