Natalie Portman Closer To Playing Lois Lane?

Natalie Portman recently turned down the lead role in Gravity and now has also passed on Pride & Prejudice & Zombies. She left Zombies over scheduling conflicts but will still produce it. This gives more validity that Natalie could very well be up for the female lead in Zack Snyder's Superman: Man of Steel. Portman has been rumored to be up for the key role of Lois Lane. I assume unlike Singer's Superman Returns Warner Bros. will be looking to populate the reboot with well known and prestigious actors. Similar to what they've done with the Batman franchise.