According to various sources, including an interview with the show's creator, Hwang Dong-hyuk, is expected to have a total of 9 episodes . This is similar to the first season, which consisted of 9 episodes.
If you plan to binge the entire 6 episodes on release day, you are looking at roughly 6–7 hours of screen time. That is a long day, but significantly shorter than the 9-hour marathon of Season 1. squid game 2 how many episodes