The development done to Sakura throughout the entire manga says otherwise, 3rd data book says she used to have a crush on Sasuke. Even Pierot believes she doesn't love Sasuke anymore with ep 308 why are we going to start doubting now???
Well kishi was obvious with tobi being obito, Sakura's end development can basically become grand, moderate, or suck. Grand if she matures over Sasuke, sticks with naruto and forgives Sasuke. Moderate if she is well alone, no point in her just ending with Sasuke. Sucks if she goes and reverts to Sasuke.
Remember, Sakura was designed to embody human weakness, her emotions are her biggest cause of restraint and development between both Naruto's safety and her old ideal crush on Sasuke. Emotion is both a human weakness and stregth. Sakura's confrontation and dwelling on Sasuke is a weakness for now, ultimately its a weakness for her mentally. Overcoming it is obviously her best development, it makes even more sense if she takes her emtion from bad, to overcoming Sasuke, to ultimately protecting and/or ending with naruto. Basically she matures and ends opposite how she started but this is how she overcomes that weakness, standby the one who gave you strength and made you better as she has herself. No doubt that Naruto and Sakura have caused each other pain but also given each other strength, its that bond between them that makes us like this pairing, even a near total meltdown between team 7 in the reunion they still have an unbreakable friendship, it only continues with her concern in this past chapter.
I mean remember, as far her orgins go, Sakura is one who has no tragic in the past but learns about it like most of us who had a good childhood and family, she learns the issues the others faced and tried to help and understand them. She could not understand Sasuke as Naruto could, but she was able to understand Naruto because of his devotion to her, hence the resolution. Aside from maturing over Sasuke, "doing that big thing of help for naruto" is still around, we saw it as early in the start of part 2 and as late as 573, she still has the determination to help him. Would not be a suprise if she finally gets an event only she can fulfill, basically she steps up. This chapter did open a few foreshadowing events, now just madara and the ten tails are on the battlefield and the weather has gone insane, what will the allaince do?
As for Hinata, she is not the competitive type, kishi literally can give her a notion of just accepting Naruto's feelings for sakura or just let her forge her own path away from Naruto, hinata doing something individual away from Naruto is something she has yet to do. Sakura at least tried a couple things and tried to not let Naruto need to be the only one dependend on, even with her fake confession to just free Naruto, she didn't want to cause him pain and put him on a near death sentice, she at least tried to make amends.
I'm actually suprised Sai has not figured out that its kinda obvious that while Sasuke and Sakura cause Naruto pain, they are also his sources of strentgh, I mean we see the events of him hurting Sakura and desire to bring Sasuke back reoccuring a few times in the series, its not a strecth to say that the 4 tails event drove Naruto to not depend on Kurama's power, this lead him to the rasenshuriken and sage mode eventually, power but not from Kurama. But after enough resolution, he was able to come back and confront Kurama and ultimately turned what he once saw as a curse into a blessing. That 4 tails event did have signifiance.
Not even worried about SS, it may have a last hurrah moment, like Sakura could interact maturely, obviously I'd see her taking caution when he first appears and be happy to see Sasuke back to what he was but does not change back to fangirl mode. I'd at this point expect her to still put naruto above sasuke, I mean for still loving him even at the reunion, she was still quick to just again put naruto above them both. I think its safe to say she won't revert back unless kishi wants to destroy the character development on both of them. Heck we need to see Sasuke's view too, he is not revealed everything.
When it comes to Sakura and the future interaction with resolved Sasuke, we only have a small piece of the puzzle, team 7 still knows him as a phsyco from the last event, sasuke did not exactly reveal everything, Sakura us still able to change, 540 and 615 (maybe) have not been revealed. There is a lot missing in this puzzle. I myself would believe Sakura to side with naruto more by now, because she knows he is the answer to this situation. The fight would still have to happen, something such as determining the future or whatever else long as the reason is either of a promise as Sasuke said he would fight Naruto or if something else comes along, as long as the Naruto vs Sasuke fight has a good reason and Sakura who will be concerned for them both, obvioulsy her big finish would be taking naruto.
NS faith is still high and looks promising, not gonna worry, we'll take the future as it comes. Our fandom is tough and logical, we have been hit with 469 and 615 and yet we are still going strong.

<---this is basically how I feel about NS right now.
This chapter basically just gave me excitment for the upcoming ten tails, Kakashi vs obito (i'm literally going to enjoy this once it comes to anime form), and the now open potential of NaruSaku events. We may need to wait a little longer, we may continue with this fight or jump to kakashi and Obito but this still remains, naruto and sakura may have interaction again soon.