I didn't want to do this just yet due to the lack of trailers but nvm, here we go:
The Greatest Showman - 1st January -
Trailer
The Commuter - 19th January -
Trailer
Maze Runner: The Death Cure - 9th February
Black Panther - 12th February -
Trailer
Red Sparrow - 2nd March -
Trailer
Meg - 2nd March
Tomb Raider - 16th March -
Trailer
A Wrinkle in Time - 23rd March -
Trailer
Ready Player One - 30th March -
Trailer
Rampage - 13th April
X-men: New Mutants - 13th April
Avengers: Infinity War - 27th April -
Trailer
Han Solo - 25th May
Deadpool 2 - 1st June -
Trailer
Jurassic World: Fallen Kingdom - 8th June
Oceans Eight - 22nd June
Ant-man and the Wasp - 29th June
The Incredibles 2 - 13th July
Mission Impossible 6 - 27th July
The Predator - 3rd August
The Equalizer 2 - 14th September
Venom - 5th October
X-men: Dark Phoenix - 2nd November
Mary Poppins Returns - 21st December
Aquaman - 21st December
Bumblebee - 21st December