We heard some details on a Samsung-made reference design running the Linux-based Tizen OS a few days ago, and now SamMobile is reporting that it'll contain a super Super AMOLED HD Plus display, a screen that isn't available on any currently shipping smartphone. The big differentiator here is that this display wouldn't use the infamous Pentile pixel arrangement that Samsung chose to include in the Galaxy S III, supposedly due to a longer lifespan. There's still a bit of ambiguity around this screen — we heard that it's running at a somewhat-odd 1024 x 720 resolution, which would put it under the commonly-accepted 1280 x 720 HD resolution. As this phone is just a reference design, we don't want to read too much into what we might see in a final product, but it's definitely worth noting in light of Samsung's comments earlier this week. It's also worth noting that even with this odd resolution, this screen would represent the highest pixel density for a non-Pentile AMOLED on a phone.