When Howe worked at Bournemouth the most common tactical formation he used was 1-4-4-2 with a fluid transition to 1-4-4-1-1. However during his practice in Spain (with Diego Simeone and Andoni Iraola) his concept of play reportedly evolved to 1-4-3-3.
Eddie Howe is known for playing very offensively based on ball possession and his main goal is to stay in the offensive third to create as many goal scoring chances as possible.
On offense defenders often move up higher to support the attackers. The wingers play wide and high often engaging in one-on-one duels with his defenders actively covering the area.
In defense everyone uses high pressing and focuses on winning the ball back as quickly and efficiently as possible. Whenever rivals are in possession of the ball Howe’s players close down their play zones and wait for a mistake to immediately overload this space and limit the opponent’s opportunities.
So we expect from Newcastle a starting shape of 1-4-3-3, ball possession and patient play from the back. High pressing and overloading zones should remain the same.