The leaks say that the starter evos will look different depending on whether they evolve during the day or at night. So maybe those leaks are just one form of the final evos
Im assuming those are the "night" evos then? If Litten goes Dark, Popplio becomes a Siren and Rowlet becomes swift-footed robin hood. Daytime will have more pretty and light-hearted designs I pray.
Now I'm really starting to wonder if Megas are coming back. If those leaks are true which they seem to be Alakazam will be fighting type in Alola. So does his Alola form not mega evolve?
