Captain America: Brave New World will supposedly use the Celestial from Eternals as a major plot point and possibly link to the X-Men.
After being seemingly forgotten about since its release in 2021, the end of Eternals planted something in the MCU that should have been impossible to ignore. But ignored it was. That would be the massive, frozen Celestial statue emerging out of the ocean that the Eternals stopped from destroying the planet.
The idea is that the Celestial, the dead Tiamut, has been discovered to be a resource of rare material that the global powers of the world are now fighting to control, hence all the missiles. A further theory is that this may be how adamantium is introduced to the MCU, the impossibly strong metal that rivals Vibranium, and of course has direct connections to the X-Men as it makes up Wolverine’s bones and claws.
