Board Thread:Ninjago Wiki News/@comment-37383996-20200128152431/@comment-30499831-20200128200551

G Frost-Ogaji wrote: They are clearly the second 2020 installment. Whether it's Season 13 or not it's definitely not part of Prime Empire. I absolutely do see it as a possibility that Prime Empire would be considered "The Lightning Chapter," and Season 13 will be considered "The Earth Chapter."

That begs the question, what's to come next year? Anniversary time travel season. Ninjago Generations.