Calm down, guys. This picture Pokenchi showed is not full yet, so Dartrix might be in.
While that very well might be the case, I think some of you are overlooking the more obvious conclusion.
What they showed even if it was Ash's Torracat and Lana's Brionne, you're ignoring that it doesn't mean that's the end of the future for Rowlet, speaking generally.
1. Rowlet was NOT shown, during that specific part, I don't think, otherwise why wouldn't it be mention.
2. Just because Litten and Popplio evolve first doesn't mean Rowlet can't evolve later. Maybe the writers are trying to get Ash with an Incineroar much sooner than say Decidueye, and maybe they want to expose us to Rowlet more than Litten. If the writers/producers do not care about Litten/Torracat/Incineroar, then I have no problem with it being fully evolved by episode 60 or episode 70. Rowlet could take that long to evolve once, and maybe 20 or 30 episodes later evolve into Decidueye. Maybe they want to balance Rowlet out but treat Litten like Ash's Charizard, maybe even have a small disobedience plot that will be resolved MUCH sooner than Charizard, simply because it would be in character for Incineroar to disobey Ash, not only because of Litten as a character has been portrayed but because Incineroar as a species can disobey their trainer.
So no, its WAY too soon to write Rowlet off, if its a speculation that Rowlet won't evolve fine, but it is in NO WAY confirmed that Rowlet will remain unevolved. When we get to potentially some Pokemon league or the end goal at the end of generation or next generation news, and Ash still has Rowlet, then maybe Rowlet won't evolve. But its WAY too early to assume that just because of a Brionne and Torracat image.
Games =/= anime. It's not nearly as easy to evolve a Pokemon in the anime as it is in the games.
I disagree with you but I see your point.
I disagree with you because.....Steenee, you didn't forget about her did you? Or hell Ash's Goodra is also a good example.
But I do see your point, that evolving a Pokemon in the anime, is overall more difficult than in the games and that's only because of the overall sheer differences between the two media as well as the one pulling the strings.
1. In the games, it is entirely up to the player themselves to decide if a Pokemon evolves or not, and to reach or match their equations.
2. In the anime it is NOT up to the viewers to decide if or even when a Pokemon evolves. I don't know who EXACTLY is the one in charge that gives permission to evolve a character's Pokemon and WHEN to evolve them, but for convenience sake, I'll say an Executive Producer.
I say I disagree with you in that an Executive Producer could give permission to evolve Litten in the very NEXT episode after capture. So if Ash DOES catch Litten in episode 21, Litten could easily evolve in Episode 22, if permission is given and if its part of the story for it to evolve THAT early, I doubt it could randomly evolve for the sake of evolving, someone has to approve of it evolving in whatever way (otherwise we're probably looking at "fan fiction" stuff) is presented in the anime. And in that sense, with permission evolving in the anime can cut through some of those "technical limitations" forced upon by the games (AKA level 40 evolution, hypothetically speaking)
So it's only more difficult because it has to gain approval, but in terms of already having received approval it technically would be considered more difficult to evolve in the games, since it actually takes TIME to evolve a Pokemon in the games, in terms of the anime, its merely writing a story, animating the story and evolving it. Litten could evolve moments after being caught or even evolving BEFORE it has caught, all that is required is approval by the "executive producer" and probably a lot of other approvals as well.