Having finished higher than opponents Bradford City in the league table, Town will wear their home kit a week on Saturday with the Bantams donning their gold and black away shirts.
Keith Stroud of Hampshire will referee the game.
Around 6,000 tickets are thought to have been sold to NTFC season tickets on the first day of availability. General sale begins on Thursday morning.
Bradford skipper Gary Jones believes his side are finding form at the right time after a marathon season which will see them play their 64th game of the campaign at Wembley.
Speaking after the semi-final win at Burton he said: “If we play like that, we can beat anyone, I honestly believe that. On a good pitch at Wembley and in a game that will be on an even keel.
“Against Swansea (in the League Cup final), that wasn’t the case because they are a top team and we hardly saw the ball during the whole 90 minutes. But we will be up against a team from our division and that can only be a plus.”
Source: Cobblers Mad