The end of Naruto? Possibly. But I think it's perhaps too early to say. I mean, showing all the dead people and all does mean bringing back the memories and all, to help wrap this story up. But what if it isn't the end? What if there'll be post-war stuff and all?
Bleach could have ended just after Aizen was defeated, but instead, a new arc was introduced. It's true that there are only 426 chapters of Bleach, but still.
Maybe Naruto will end. The defeat of Madara, Sasuke becomes good/Naruto kills him, Tsunade's death, Naruto mastering the Kyuubi's power and becoming Hokage etc. Who knows? It's for Kishi to decide. Like you said, all secrets revealed, etc. The final battle.
On the other hand, it may not end. The story will still continue, a new antagonist will be introduced and a new arc starts. Naruto meets new friends and...goes all the way until the end.
If the war shows a lot of secrets and stuff previously hidden, it's most likely the end. If all the other ninja, including guys like Neji, Lee, Kiba etc. and the unnamed guys just do some random fights and all the important guys like Kabuto, Madara, Sasuke, Naruto, Killerbee and the Hokages get all the spotlight, it probably won't.
What I think will happen is this: all other ninja just take out the white Zetsus. Naruto faces off versus Madara and kicks his butt and all other important guys will get their fights. Sasuke, after Madara's defeat, may either try to take out Naruto and fail, or just go crazy and try to take out the Leaf Village, and fail even harder. And then Sasuke escapes and he's the final boss. The final fight will probably be Naruto vs Sasuke, and Sasuke will die. The end. Or maybe not. The story may drag on and on with stuff that Kishi writes and the final fight: Naruto vs Sasuke.
Personally, I don't want Naruto to end after this arc.