A good quality video of highlights from the Disney-Marvel presentation at D23 is now online. You can skip the first minute, after which the Marvel stuff starts and Tom Hiddleston is introduced and then brings out Natalie. Thanks to Belerofonte.
During the presentation they showed some scenes from Thor 2, which can you read about over at Collider.
Finally, best of all, here is a backstage interview with Natalie in which she talks about Thor, family and Terrence Malick.