I also don't see Marvel removing the holocaust origin from Magneto when they have the opportunity to connect him to the First Avenger timeline where Captain America existed and fought Hydra, all of which created elements (super solder serum, cryo freezing people for 70 years, etc) that allows us to buy Erik being that old and still looking 50-ish. And you really think Marvel is going to not take advantage of the opportunity to show us a flashback of Captain America liberating a young Magneto from a camp? Oh they are totally going to do that ****.
They are not changing Magneto's origin.