Children of the Atom #1 was originally announced for an April 2020 debut, but then put on hiatus (with many other Marvel books) due to the onset of the COVID-19 pandemic. The book was later rescheduled to come out January 6, 2021 - but now that has been changed as well.
Described by Marvel as a title about "the greatest teenage superhero team of all time," Children of the Atom focuses on a new team of mutants who are specifically mentored by older X-Men counterparts – with some of the members of the team even sporting powers and costumes that resemble those of their mentors.