Correct, as with the release of Corona 9 the licensing of Corona has changed - the old licensing no longer exists, so everyone is moved onto one of the new licensing structures (Premium to start with, for the remainder of their subscription until the next renewal, when they can choose to stay on Premium or move to Solo, and choose whether to swap from Monthly to Annual).
EDIT - because you have to be on one of the new licensing forms, else you would no longer have Corona.