Board Thread:Ninjago Wiki News/@comment-37383996-20200128152431/@comment-34330505-20200128194744

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?