Back in January after we learned that Zune sales and platform revenue was down $100 million under the previous quarter, we asked whether the Zune was ultimately doomed to die an unglamorous death or if Microsoft had an ace up its sleeve. Last night, Engadget posted some images that they feel, based upon some chitchat with sources, are of an upcoming touchscreen PMP known as the Zune HD. Because of the lack of anything other than a few promotional shots we’re going to have to resort to the age-old game of speculation when discussing the Zune HD, but if all of this turns out to be true we think it reasonable to expect that the Zune HD would ship with a display that approaches 720p and (based upon our measurement of the screen in the images) an aspect ratio of 1.85:1 — one of two standard aspect ratios used by mainstream films. But as we say so often in the tech blogging world, we shall see. Would a Zune HD have any chance of finding its way into your pocket or has the Zune ship already sailed for you?