When does SparkShorts return?

SparkShorts is a series of American independent animated short films produced by Pixar Animation Studios. It consists of a program in which Pixar's employees are given six months and limited budgets to develop short films. The first three shorts were released at SIGGRAPH on August 14, 2018, before having a limited release at El Capitan Theater on January 8, 2019. Purl, Smash and Grab and Kitbull were released on February 4, 2019, on YouTube. Subsequent shorts have been praised for their more mature themes.