That's right! According to Fortissimo Films' official website (fortissimo.nl), they're going to be backing Todd Solondz's next film, which has yet to be titled. Solondz is quoted as saying that it's, "a kind of sequel to - or riff on - Happiness and, to some extent, Welcome To the Dollhouse. Many of the characters from these movies unexpectedly beckoned to me, and so I have explored new ways of developing and enlarging their stories, with the intent to recast them from a fresh perspective."
The film is being produced by Ted Hope (who previously produced Happiness and Storytelling), Mike Ryan and Derrick Tseng (who both produced Palindromes) and executive produced by Michael J. Werner and Wouter Barendrecht.