I have some theories that might have been mentioned before by others (I'm new in this forum, and I'm lazy reading all posts

)
Before I begin, I want to make clear that
this is only my opinion and my speculation. Maybe it will happen, maybe it won't. You can take this as they are, speculation, or as load of salt, crap or whatever.
Second. I'm not very familiar with the shounen series, so many of my ideas won't match at all. I just watch anime and read some mangas that I like and I find typical clichés.
I) Sakura-Sasuke:We all know well Sakura's feelings towards Sasuke in Part 1, so there's no need to talk about it. From what I've read in Part 2, there's no solid proof that her feelings towards him have changed (She wanted to be stronger in order to do something instead of being a burden). The fact that she attacked Sasuke only poves that she understood that in order to stop and save him, they must fight him.
I agree that the group must save Sasuke so Sakura can trully meditate on her feelings and choose. The absence does not help to clearify one's heart.
If the group (I mean Naruto, Sakura and the others...) defeats Orochimaru and save Sasuke before a final showdown against Akatsuki (this is very possible), and Sasuke lives, the chances for a kiss between them is not low (just one kiss). And because of his luck (and a romance cliché), Naruto will watch that scene by accident. Come on, in Part 1, he watched Sakura hugging Sasuke, and she begged Naruto to bring Sasuke back, so this is possible.
In the end, I don't see the two of them as a couple. Sakura will understand that her love towards Sasuke has been replaced by Naruto.
II) Naruto-HinataNo offence to the fans (Hinata is a nice character), but I find little hope on this. In Part 1 we've seen a one-sided love. In the Anime, Naruto ackowledges her, but he sees her as a good friend and a kind person, nothing else.
In Part two, if there will be romance in the series, there are chances that both of them could get along well, but still, Naruto won't be with her at the end. Following the romance cliché, Hinata is going to see Naruto's feelings towards Sakura and will understand, giving Naruto support.
The chances for a kiss are really low, but for a date is like 65-70% possible. Maybe Naruto won't see that as a date, but Hinata (and probably Sakura) will.
III) Naruto-SakuraI believe there's little doubt that this will happen. It's a relationship that has evolved from a one-sided love from Naruto towards Sakura to what we've seen in chapter 297. In the anime, we've sen that she is getting along well with Naruto before he leaves Konoha with Jiraira.
However, It won't be that easy for the two of them to be together as a couple:
1. Even though they've matured, Naruto still knows that Sakura has feelings towards Sasuke. He doesn't know if Sakura has feelings for him yet, appart that she acknowledges him and they support one another in hard times. And if a kiss between Sakura-Sasuke happens, it will be harder for him to confess his feelings to her.
2. Because they haven't saved Sasuke, Sakura has not yet clarify her feelings. She wants to help Naruto in any way she can, that's a fact; but she hasn't realized yet how strong her feelings towards Naruto are. Yamato and probably Sai already can tell, now is up to her to realize it.
3. Naruto knows that he's the one that hurt Sakura when he was in four-tailed state. There's no proof that the wound has been healed, it will probably appear later and Naruto will surely notice it. If they save Sasuke. There are high chances that he won't let Sakura get too involved with Akatsuki becuse she might suffer, he can't control the kyuuby after all. Naruto wants to protect Sakura no matter what, even if he has to die. Orochimaru clearly said that Itachi is too strong and we don't know how powerful is the leader of the organization.
4. If Hinata appears in the picture (romance cliché, again), things could be harder for the relationship to happen.