Legacies to return for Season 3 after that shocking (and unintentional) season finale cliffhanger? You are absolutely not alone, and we've got all the casting information, spoilers, and premiere date info you'll need to keep yourself up to date about the new season!Though many plans for Legacies Season 3 are still up in the air due to COVID-19 restrictions and safety measures, TV Guide has managed to find a few clues about what's in store for the new season.