The release goes on to describe these characters with words like "glamour," "stylish," "ultra-chic."
“We are responding to the desire by our fans to experience the brand in more ways.”
Oh. They got this idea from Brony fap drawings, didn't they. :(
The retrospective pics of the childhood you've just lost over at ontd are worth a look.
I'm tired, so for my feelings on this, I'll direct you down memory lane to the feminist internet's collective ragefest about the time Dora the Explorer became a stylish, ultra-chic teenage girl in high school.
Edit: No wait, I'm not done. I don't care if they're teenage otherkin fantasies in high school, there's no way Rainbow Dash or Applejack would let their muscles waste away into toothpicks, Applejack and Fluttershy have completely impractical outfits for their interests (you can't farm in a miniskirt and a sleeveless corset, Applejack! and come on, Fluttershy would totally be the one going to school in the oversized t-shirts with screen-printed kitten pics on them), Twilight Sparkle would wear SENSIBLE SHOES, and... well, Rarity and Pinkie Pie are probably fine, though Pinkie Pie's duds are a little subdued. UGH, HASBRO, YOU CAN'T EVEN OBJECTIFY THEM PROPERLY.