It looks like things are finally beginning to take shape for the next generation of X-Men movies heroes.

Josh Boone, the writer/director of 20th Century Fox’s upcoming The New Mutants movie has teased on Instagram that the film is entering pre-production.

The teases began a few days ago, on Boone’s birthday. He shared a photo of his birthday cake which, in addition to featuring a “Happy Birthday, Josh” message, also included the classic The New Mutants logo. The photo was shared to Instagram with the tags #birthdaycake, #prep, #newmutants, and #productionoffices.

#birthdaycake #prep #newmutants #productionoffices A post shared by Josh Boone (@joshboonemovies) on Apr 5, 2017 at 4:49pm PDT

Boone followed that photo up with another one yesterday. This photo shows Boone himself, “Staring off into the middle distance on the #foxlot during a break,” as the Instagram caption reads. The post also includes the tags #newmutants, #makingmovies, #makingmovieswithfriends, #xmen, and #clouds.

#birthdaycake #prep #newmutants #productionoffices A post shared by Josh Boone (@joshboonemovies) on Apr 5, 2017 at 4:49pm PDT

The New Mutants movie was announced by 20th Century Fox in 2015 with Boone on board to write and direct. Boone directed the YA love story The Fault in our Stars, which makes him a solid fit for The New Mutants, a team of teenaged mutants. Fox is said to be looking to make The New Mutants the YA movie series in its long-running X-Men movies franchise. Up Next: Lana Condor Wants To Play Jubilee Again