Yeah, they are just stills from the trailer. Oh, and by the way it looks like marvel_freshman only posted 2 of the 4 stills (most likely because he felt we had seen them before), but still if people want to see the other 2 stills you can view them at this link below.
http://marvel.com/news/story/19766/4_new_photos_from_marvels_iron_man_3
Not sure if this has been discussed already, but in the last image I wonder who is holding the badly damaged Iron Man helmet. To me I think it might be Pepper Pots, perhaps this is the moment before she suits up in her Rescue Armor.
Surfer
There is wider shot on the web of pepper holding the helmet. that pic is just the close up