The latest episode of 'IT: Welcome to Derry' has sparked interest with its ending, which involves a character named Periwinkle and the fate of the Black Spot. The episode appears to have revealed new information about Pennywise, including a potentially mind-blowing fact about the character's origin story. However, the specifics of the episode's events and their implications are not entirely clear, with some outlets discussing episode 6 and others referencing episodes 5 and 7.