The movie's original edit is said to have been four hours long
https://t.co/ViwKo7TQNQ- NME (@NME)
July 28, 2019 Director Andy Muschietti confirmed in a recent interview that the upcoming release of "It: Chapter Two" will be a fun 2 hours and 45 minutes long (though they insist that it doesn't ~~~feel~~~ long). PLUS! The film's producer Barbara Muschietti (sister of the director) confirmed that there will be a director's cut that didn't make the theatrical cut but merits being seen:
"We have some amazing scenes that didn't make it into the movie. You have to make choices sometimes and some things cannot be in this theatrical release but are definitely worthy of people seeing them at a later date."
Source:
https://twitter.com/NME/status/1155530322513149952