Nintendo is going to unveil NX today in a 3 minute trailer, but we have another megaton on deck, Red Dead Redemption 2 will show its first trailer today as well.
Rockstar will reveal the nature of Red Dead Redemption 2 through that trailer: prequel, sequel or new characters and stories in the far west. One way or another, the game could be available on November 30, 2017. Amazon has dated the game in their Spanish division with that date:
Rockstar detailed that Red Dead Redemption 2 will be available in Fall 2017, therefore, November 30 could be plausible.