Well, this is new. Giant X-Men: Nightcrawler was originally solicited for April 11th. But it will now be published by Marvel Comics two weeks early, on March 25th. While Giant X-Men: Magneto, originally solicited for March 5th, will now be published on April 29th.
Also their Diamond codes are switching, FEB200889 and FEB200890 originally for Nightcrawler, now for Magneto. And JAN200838 and JAN200839, originally for Magneto, now for Nightcrawler. Is this the first time this has happened?
The Diamond listings have only been partially amended – here is how they currently look.
GIANT SIZE X-MEN NIGHTCRAWLER
(W) Jonathan Hickman (A/CA) Ben Oliver
HICKMAN & OLIVER MASTER MAGNETISM!
Jonathan Hickman continues his one-shots showcasing some of Marvel's best artists! This time, he teams with Ben Oliver (ULTIMATE X-MEN,
THUNDERBOLTS) to bring a tale of Krakoan Ambassador and Master of Magnetism, Magneto! Krakoa may be only for mutants, but mutants still
need to deal with the human world around them. Magneto has a plan for that.
Rated T+In Shops: Mar 25, 2020
GIANT-SIZE X-MEN MAGNETO #1 DX
(W) Jonathan Hickman (A/CA) Alan Davis
HICKMAN AND DAVIS HAUNT THE XAVIER SCHOOL!
Superstar writer Jonathan Hickman teams with legendary artist Alan Davis (X-MEN, EXCALIBUR, AVENGERS) for an eerie tale of adventure! When the X-Men lose contact with the Greymalkin Habitat, it falls to Nightcrawler to lead a mission into the unknown!
Rated T+In Shops: Apr 29, 2020
They'll be properly amended soon, I'm sure.