If it's easy to code, I wouldn't mind seeing a Premiere Season added to the Season # update pages. Often in the early stages of development shows are said to be set to premiere, for example, Summer 2019. It gives a bit better idea of when to expect to see a new or returning show when the exact month/date is not yet know.
Or, perhaps better yet, just adjust the Premiere Month to Premieres and at the bottom, put in a separator line after December and just add Spring, Summer, Fall, & Winter as selectable options.