A sequel, It: Chapter Two, is scheduled to be released on September 6, 2019.\n\nBased on this passage, when will second part of it be released?
Let's think step by step below.
September 6 , 2019
The relevant sentence in the passage is: A sequel, It: Chapter Two, is scheduled to be released on September 6, 2019.

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Final answer: September 6 , 2019