Friendship is Z: A collection of one-shot crossover "movies" with a distinct Dragonball Z flavor, with Twilight and Trixie as the central characters.

FiZ 1: The White Thief (Crossover: Magic Kaito)
IN PRODUCTION -- ESTIMATED RELEASE ?
Trixie returns to Ponyville in hopes of making her first real friend in Twilight Sparkle, who is eager to have a unicorn friend willing to spend hours on end discussing magical theory. Meanwhile, a mysterious pony dressed all in white is stealing many valuable treasures...

FiZ 2: Charmcaster (Crossover: Ben 10)
Seeking to test her mettle against other unicorns, Trixie travels to faraway Unicornassus, where she encounters a murderous unicorn mare, and is severely wounded. Learning of Trixie's fate, Twilight Sparkle travels to Unicornassus, where she finds the entire town under siege by a sociopath. With the town guard defeated and the danger growing by the day, can Twilight and Trixie join forces to defeat Charmcaster?

FiZ 3: Starscream (Crossover: Transformers G1/Beast Wars)
IN PRODUCTION -- ESTIMATED RELEASE ??
As Trixie continues to recover from the battle against Charmcaster, a terrifying new enemy carves a swath of carnage across Equestria.