
u/Gestrid

A new character has been revealed for My Adventures With Superman Season 3! (MAJOR SPOILERS)
Connor Kent, aka Superboy, will be voiced by Darren Criss, who voices Superman in various media, including 2020's Superman: Man of Tomorrow and 2024's Justice League: Crisis on Infinite Earths.
The adaptation is based on a one-shot by Horikoshi included in My Hero Academia: Ultra Age. The one-shot apparently focuses on >!Eri's character!<, though that's all I know, and that's all I want to know.
This short teaser was also shown at the very end of Yuna First Live.
The phrasing here seems to suggest this isn't related to the Sword Art Online Progressive movies and is instead a completely original movie. We've known one was coming since before the anime's 10th anniversary celebration in 2022, I think, but they've been radio silent on it for a long time.