Rebecca Sugar has recently stated they would be open to exploring a Steven Universe revival/spin-off if there's enough public demand for it.

The world of Steven Universe has so much potential and so many more stories to tell and explore. The show itself changed so many lives, and revisiting this world would not only reignite the passion for it, it would also give so much comfort to all of us who hold Steven Universe so close to ourselves.

Let us make ourselves heared!