Marvel Comics is making Thor a woman. From Time Magazine:
TIME: How do you think this will impact fans who have been with the male version of Thor for such a long time?
Jason Aaron, writer of the Thor series: If you’re a long-time Thor fan you know there’s kind of a tradition from time to time of somebody else picking up that hammer. Beta Ray Bill was a horse-faced alien guy who picked up the hammer. At one point Thor was a frog. So I think if we can accept Thor as a frog and a horse-faced alien, we should be able to accept a woman being able to pick up that hammer and wield it for a while, which surprisingly we’ve never really seen before.
Time: Marvel Comics Writers Explain Why They’re Making Thor a Woman
"Axel Alonso, Marvel’s Editor-in-Chief: She wields the hammer because Thor can’t. This is different because for reasons we can’t disclose quite yet, Thor is unable to pick up the hammer. There are a number of women in Thor’s life, and we’re going to tease out for quite awhile the identity of who this woman is. But one of the women in Thor’s life picks up the hammer. She is in fact worthy. And she becomes Thor.
There’s only one Thor in the Marvel Universe. The character we know as Thor will not refer to himself as Thor anymore.”
So I guess that this character is going to wield the hammer thus having the power and now name of the god of Thunder “Thor”. This is a mega weird way to go about this but meh I’m going to sit and see what happens