Thanks to Empire Magazine, we finally get a clear look at Natalie as Mighty Thor alongside Chris Hemsworth. The photo is spectacular:

Director Taika Waititi also talks in Empire article about Natalie’s return to the franchise:

I was writing and it was like, ‘Wouldn’t it be kind of cool to bring Jane back into the storyline?’” In doing so, the director didn’t want to tread familiar ground. “You don’t want Natalie coming back and playing that same character who’s walking around with science equipment. You know, while Thor’s flying around, she’s left on Earth, tapping her foot going, ‘When’s he going to be back?’ That’s boring. You want her to be part of the adventure.

And since this is a Waititi joint, you can expect his trademark offbeat humour to course through Jane just like her new-found lightning powers. It was a challenge Portman was more than ready for. “Natalie’s really funny in real life,” says Waititi. “She’s kind of goofy and has got a great sense of humour, and I don’t think that was exploited enough in the first films.”

Additionally, we also have a couple of stills of Chris as Thor: