So we saw Doomsday in the new Dawn of Justice trailer. Some people said that the movie makers are palying this card far too soon. Some people were dissapointed on the way the character looked and some said that it wasn't his final look. They say that the character will evolve into more comic accurate form during the movies 3rd act, and that may well be the case (though this also said about the Lizard and Goblin of the Amazing Spider-man films, and...yeah no). I however have my own theory.
You see, I think that this Doomsday is just Lex's first attempt, a prototype if you will. He is not gonna kill Superman (we have whole Justice League movie coming and etc.), and that will make Lex (or his dad, seeing as Eisenberg's chracter has that jr. in the end of his name) angry and he will probably try again. So when will we see this actual Doomsday from the comics that we all know and hate. Well...
Man of Steel 2: Death of Superman
It's obovious at this point that DC wants to keep stakes high with each movie. Superman solo-film's dates haven't even been announced yet, so by time it eventually comes out Supes has already had plenty of adventures in JL and other movies, so this story coming out won't feel rushed. This would be pretty good story for Superman movie since it's some thing new that hasn't been done yet in motion picture (at one point they tried though, like really hard). This could be the movie where we will finally see the actual full powered Doomsday straight out of the comic books, doing the thing he was born to do.
So anyway, this was my thoughts on the future. Ain't no psychic so I might be completely wrong.