Give some stream of consciousness and then the answer. The Flash is an American action television series developed by Greg Berlanti, Andrew Kreisberg, and Geoff Johns, airing on The CW. It is based on the DC Comics character Barry Allen / Flash, a costumed crimefighter with the power to move at superhuman speeds. It is a spin-off from Arrow, existing in the same fictional universe. The series follows Barry Allen, portrayed by Grant Gustin, a crime scene investigator who gains superhuman speed, which he uses to fight criminals, including others who have also gained superhuman abilities. The Flash was renewed in March 2016 for a third season, which premiered on October 4, 2016. On January 8, 2017, The CW renewed the series for a fourth season, which is scheduled to debut on October 10, 2017. As of May 23, 2017, 69 episodes of The Flash have aired, concluding the third season.

Based on this passage, when does the new episode of flash come out?
The relevant sentence in the passage is: On January 8, 2017, The CW renewed the series for a fourth season, which is scheduled to debut on October 10, 2017.
Therefore, the answer is October 10 , 2017.