Sorry the nature of pairing does that; oh I interrupted you ...well go on
Viva L'Amour my mate Viva L'Amour
Well Naruto still loving Sakura IS A BIG DEAL, especially after all that holding hand and sacrifice done by Neji and Hinata . But don't worry you are NARUSINGLE FAN, so you shouldn't let it get to you much less care
If you wanted to know what Itachi said, just look at the present chapter, it's there.
I highly don't think Sasuke will become Hokage over Naruto.
He'll probably have a beer, laugh and then not give a damn because he would know that this is just a story and LIFE GOES ON BEYOND NARUTO'S PAIRING OUTCOME.