Kiss Him, Not Me anime will premier on October 9. There will be an advance screening on September 19. More info on ANN.
Gum Kare! marketing campaign will have a manga adaptation, Gum Kare! Idol Boyfriends!: The Idols Get Started, starting this September 28. More info on ANN.
The handsome personified gum characters are starting their own idol group called chu♡chu SUNSHiNE. The heroine of the story is a female high school student who suddenly becomes a tooth. The girl works as the male idol group's producer as they journey towards a major debut.
Ensemble Stars will have a second stage adaptation titled, Ensemble Stars: Take Your Masks! in January. More info on ANN.
Bandai Mamcos is accused of plagiarizing Idolish 7 trading cards especially with The IDOLM@STER and Uta Prince No Sama. More info on ANN.
Sanrio Danshi gets an otome adaptation, Sanrio Danshi~ I've Learned What Love Is. More info on Rocketnews.
Here's the visual for the stage adaptation of Prince of Stride. From Prince of Stride Twitter account.
I've also added Sanrio Boys on the Merry Christmas post.