Do These Spoilery Game of Thrones Set Pictures Give Away a Character Death?

Game of Thrones is currently shooting season five in Spain, which is standing in for Dorne, where the late Oberyn Martell hailed from, and we have a handful of juicy pictures from the set. We can't quite tell which new characters are there yet, but we can see Daenerys (Emilia Clarke) watching over a battle while she wears a white dress we've never seen. If you've read the books, you'll know exactly what's going on here, and the characters who are appearing together is kind of a spoiler as well. Also of note? One of the participants in the duel is the disgraced Jorah Mormont (Iain Glen). What else can you deduce from this sneak peek?