Just found out that Kerbin's height texture in KSP2 still has the smiley face easter egg. It's nice to see. I don't know if anyone has discovered this yet, so I just decided I should share it here just in case. If you wanna see for yourself, either head to the coordinates of the original smiley face (At least I think it's in the same place), or use some sort of texture extracter like I did to reveal the bump map.