Are you kidding? So in the end its just "Oh, it was all just a dream."

Basically; Tobi cast the genjutsu supposedly to subdue Naruto while he's extracting the Kyuubi from him. Somehow Sakura gets involved and is also caught in same genjutsu world as Naruto.
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As for Sakura's development, she's come a /long/ way even without having anything to do with romance. She's no longer this seemingly vapid and shallow little girl obsessed with the cool good looking guy, the little girl who was ignorant about emotional pain and loss. She threw herself into her training, threw away her petty concerns about her appearance (recall that during the first bell test, she was actually on a diet, and how after cutting her hair in the FoD, she kept her hair short), and became one of the best medic nins in existence.
Sakura's fight with Sasori alone speaks volumes about how far her abilities and character have developed. She made antidotes that had no room for error (stated by Sasori himself), she had the foresight to make them before hand, she was willing to throw herself in front of a sword in order to save a comrade that she barely knew (thus why Chiyo called her chivalrous), and blew herself up to get out of a cloud of poisoned smoke.
As has been mentioned before as well, she's assumed a role of some leadership as well, giving orders that are followed both during the Pein invasion when Naruto was in kyuubi mode, and during the war when she's in the medic tent and she gives clearance for the supposed injured nin to enter.
I bring up her huge lack of contact with Sasuke since her confession because it was made obvious that what Sakura still had feelings for was her
memory of Sasuke, the 12/13 year old comrade that thanked her for expressing care for him. It is not easy to reconcile and accept that someone you were so sure that you loved has changed like that. Which is why 540 is so significant, because she has finally gotten through her head that Sasuke is a different person now. It showed a huge difference in her perception of him, and will most likely be the first step in her finally letting go of whatever romantic feelings she has left for him.
You may think its stupid for Sakura to have ANY romantic feelings left for Sasuke at this point, but I'm pretty sure its just meant to create more pairing drama (most likely pushed for by editors).
Edited by Paptala, 06 July 2012 - 04:38 AM.