I've already replied to you today via email, but your email apparently has problems, because it bounced back.
As I've told you in the email, all scenery updates have always been free, even large ones like Zurich an O'Hare. Only if a scenery required an entire remake, we would then released it as a new product, but with significant discounts for existing users.
However, PHNL and KLAS are not so old that require a total remake in the foreseeable future.