As of the current chapters of the manga...no.
i dont know the number but its called 'Hinata's confession'
No such chapter out till now...
Nope, No changes so far.
No, he didn't. Maybe later in manga.
Well he will marry Hinata because Hinata told naruto that she loves him so that's why. You can see it in youtube just put naruto shippuden ch.427 : confession.
well, i think it's up to sakura if she likes hinata as a friend. in my opinion, i think there's something going on between them but then agen it cud jus be me being suspicious! :S I think because they both (not really sakura tho) have romantic feelings for naruto. and after hinata's confession it became i guess awkward between the two. But hinata really hasn't done anything since her confession tho....
Yes. In chapter 437 she confesses to Naruto, thus the chapter title 'confession'.
No. Naruto does not have a girlfriend but he does crush of Sakura and there is something between him and Hinata, who has a rather big crush on him. It is obvious that he cares about Hinata and he crushes of Sakura. But, no, he does not have a girlfriend.
I do not think he does because everyone [{(that I know)}] in naruto Knows about Hinata's confession to Naruto and that would ruin most of kiba's hope with a relationship with Hinata that he knows she likes Naruto and he does not want to ruin his best friend's relationship [do not blame me I am a NaruHina fan]
He hasn't answered to her confession yet
He hasn't answered her love confession yet, but she doesn't seams to mind.
Naruto currently isn't dating anyone, he has a choice between Sakura and Hinata.