Until know the skies of Minecraft Pocket Edition have been grey or blue, but no longer! Johan Bernhardsson from Mojang shared this screenshot earlier today with the caption, "New fancy sky rendering for 0.5.1. Limited to faster phones for now." It's unclear what phones he means by this as he did not give a specific meaning. It's safe to say that the iPhone 4 and Tegra 2/3 Android devices will make the cut, but anyone using an iPhone 3GS or Tegra 1/ARMv7 Android device might not see the light of day (see what I did there?). This is just our estimation, but we will update this article when more specific details are available.
Source: Twitter