Quote: jet-vac6000^ That are marked as spoilers...
To be fair, a game's been out since October has kind of moved past the 'spoilers' threshold. Plus, that's such a minor plot point it doesn't really even matter in the grand scheme of the game.
Personally, I don't really see a big difference in the models...maybe someone can point them out? Looks to me like the later one may have more hair features which could have been added at a later point. As Arc of Archives pointed out, it could have been from a earlier version of her model, however I'd say newkill is right on the money, i believe that ending part is a prerendered cutscene, not using the game's engine. It's probably pretty negligible in the differences for Flynn though since he doesn't have much of anything to be accentuated. (except maybe his jacket or something.