By far this new concept art don't have the same repercussion of the first one he show on his instagram, we're talking about Weaver interview here, the Newt "concept art" don't even have 40 messages, you guys remember how many messages and attention got the first time Blomhack post the first concept arts from last year?.
This movie is dead until Fox say something official, Weaver trying us to convince this is the “most satisfying” ending, when Alien 3 got the right ending of her run as protagonist.
I think it just fits and makes so much sense thematically for Newt and Hicks to die, even in an unceremonious manner. This is an incredibly dark series about murderous alien rape monsters, why in god's name does anybody think "omgz the cute kid can't die!"
Disney mentality this days...