That's Luna. That's Noct and Luna at Ardyn's funeral in DotF which is what that concept art was for. None of the DOTF art was "old art", it was all newly created even if they may have been channeling elements of older concepts. Noct is even holding Sword of the Father which was created like 2 years after Stella was already deleted from the game so why would it even be Stella? The figures on the back to the right are also the Lucis royal council wearing their head pieces which were designed specifically for Kingsglaive and then later used in the actual game.
That looks like Ravus's weapon.
And given that Noct is holding Sword of the Father I think it's more fitting that Luna is holding Alba Leonis there, especially since the cover of DotF has Regis and Ravus on the back cover while Noct and Luna are on the front.
And even if it is a Rapier that would more likely just harken back to her prototype Stella having one, either way that art isn't Stella, it is of Luna in a concept for one of their ideas for DotF.
Likewise the concept art of Noct and Luna with children was also just an idea, not something actually fully planned out which is why they even say that the names of the children are up to the readers imagination, that art of them with kids having a picnic with Ardyn was also just a concept art piece and not actually something that the DLC would have implemented. They mentioned how when they first started planning out the DLC they asked various artists on the XV team to draw up their own interpretation of what the "ideal" future for Noct and Luna would be which is why there is various artworks of that nature.
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That looks like Ravus's weapon.
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And given that Noct is holding Sword of the Father I think it's more fitting that Luna is holding Alba Leonis there, especially since the cover of DotF has Regis and Ravus on the back cover while Noct and Luna are on the front.
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And even if it is a Rapier that would more likely just harken back to her prototype Stella having one, either way that art isn't Stella, it is of Luna in a concept for one of their ideas for DotF.
Likewise the concept art of Noct and Luna with children was also just an idea, not something actually fully planned out which is why they even say that the names of the children are up to the readers imagination, that art of them with kids having a picnic with Ardyn was also just a concept art piece and not actually something that the DLC would have implemented. They mentioned how when they first started planning out the DLC they asked various artists on the XV team to draw up their own interpretation of what the "ideal" future for Noct and Luna would be which is why there is various artworks of that nature.
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