She will most probably get but a little later. She is a very popular female companion after all, so I doubt that the writers would leave her without a special. Actually I was hoping that there would be some mention of Serena in this episode, but sadly there wasn't any.
As said, if they're planning her to make a reappearance in Sun/Moon it wouldn't surprise me if they make her special during that series to transition her design into the new style.