The New Mutants' jaunt into space to bring back co-founder Cannonball in their titular title will result in the X-Men side of Marvel Cosmic coming to Earth in what the publisher calls "intergalactic trouble."
In March's X-Men #8 and #9, the Shi'ar (and its Imperial Guard), the Brood, and the Starjammers are all coming to Earth. The Shi'ar and the Starjammers have both been featured in Jonathan Hickman's X-Men work earlier this year, but this marks the Brood's "Dawn of X" debut - albeit the appearance by the X-Men's Broo on the cover teases some connection there.
Here is the solicitation for March 2020's X-Men #9 - look for the full March solicitations for Marvel later this month.
JONATHAN HICKMAN (W) • LEINIL FRANCIS YU (A) • Cover by LEINIL FRANCIS YU
GET READY TO RUN!
The New Mutants are back from space, and they’ve brought intergalactic trouble with them! The Brood! The Shi’ar! The Starjammers! The Imperial Guard!